all: remove old +build tags

The //go:build syntax was introduced in Go 1.17:

https://go.dev/doc/go1.17#build-lines

gofmt has kept the +build and go:build lines in sync since
then, but enough time has passed. Time to remove them.

Done with:

    perl -i -npe 's,^// \+build.*\n,,' $(git grep -l -F '+build')

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

client/tailscale/acl.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 package tailscale
 

client/tailscale/devices.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 package tailscale
 

client/tailscale/dns.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 package tailscale
 

client/tailscale/localclient.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 package tailscale
 

client/tailscale/required_version.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !go1.19
-// +build !go1.19
 
 package tailscale
 

client/tailscale/routes.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 package tailscale
 

client/tailscale/tailnet.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 package tailscale
 

client/tailscale/tailscale.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 // Package tailscale contains Go clients for the Tailscale Local API and
 // Tailscale control plane API.

cmd/containerboot/kube.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 package main
 

cmd/containerboot/main.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 // The containerboot binary is a wrapper for starting tailscaled in a
 // container. It handles reading the desired mode of operation out of

cmd/tailscale/cli/diag.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux || windows || darwin
-// +build linux windows darwin
 
 package cli
 

cmd/tailscale/cli/diag_other.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !linux && !windows && !darwin
-// +build !linux,!windows,!darwin
 
 package cli
 

cmd/tailscale/cli/ssh_exec.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !js && !windows
-// +build !js,!windows
 
 package cli
 

cmd/tailscale/cli/ssh_unix.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !js && !windows
-// +build !js,!windows
 
 package cli
 

cmd/tailscaled/debug.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 package main
 

cmd/tailscaled/install_darwin.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 package main
 

cmd/tailscaled/install_windows.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 package main
 

cmd/tailscaled/proxy.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 // HTTP proxy code
 

cmd/tailscaled/required_version.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !go1.19
-// +build !go1.19
 
 package main
 

cmd/tailscaled/ssh.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux || darwin
-// +build linux darwin
 
 package main
 

cmd/tailscaled/tailscaled.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 // The tailscaled program is the Tailscale client daemon. It's configured
 // and controlled via the tailscale CLI program.

cmd/tailscaled/tailscaled_bird.go

@@ -3,8 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19 && (linux || darwin || freebsd || openbsd)
-// +build go1.19
-// +build linux darwin freebsd openbsd
 
 package main
 

cmd/tailscaled/tailscaled_notwindows.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !windows && go1.19
-// +build !windows,go1.19
 
 package main // import "tailscale.com/cmd/tailscaled"
 

cmd/tailscaled/tailscaled_windows.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.19
-// +build go1.19
 
 package main // import "tailscale.com/cmd/tailscaled"
 

cmd/tailscaled/with_cli.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build ts_include_cli
-// +build ts_include_cli
 
 package main
 

cmd/tsshd/tsshd.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
-// +build ignore
 
 // The tsshd binary was an experimental SSH server that accepts connections
 // from anybody on the same Tailscale network.

control/controlclient/sign_supported.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows && cgo
-// +build windows,cgo
 
 // darwin,cgo is also supported by certstore but machineCertificateSubject will
 // need to be loaded by a different mechanism, so this is not currently enabled

control/controlclient/sign_supported_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows && cgo
-// +build windows,cgo
 
 package controlclient
 

control/controlclient/sign_unsupported.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !windows || !cgo
-// +build !windows !cgo
 
 package controlclient
 

control/controlhttp/client.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !js
-// +build !js
 
 // Package controlhttp implements the Tailscale 2021 control protocol
 // base transport over HTTP.

derp/derp_server_default.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !linux
-// +build !linux
 
 package derp
 

derp/derphttp/websocket.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux || js
-// +build linux js
 
 package derphttp
 

disco/disco_fuzzer.go

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 //go:build gofuzz
-// +build gofuzz
 
 package disco
 

hostinfo/hostinfo_darwin.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin
-// +build darwin
 
 package hostinfo
 

hostinfo/hostinfo_freebsd.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build freebsd
-// +build freebsd
 
 package hostinfo
 

hostinfo/hostinfo_linux.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux && !android
-// +build linux,!android
 
 package hostinfo
 

hostinfo/hostinfo_linux_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux && !android
-// +build linux,!android
 
 package hostinfo
 

internal/tooldeps/tooldeps.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build for_go_mod_tidy_only
-// +build for_go_mod_tidy_only
 
 package tooldeps
 

ipn/ipnlocal/peerapi_h2c.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !ios && !android && !js
-// +build !ios,!android,!js
 
 package ipnlocal
 

ipn/ipnlocal/peerapi_macios_ext.go

@@ -3,8 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build ts_macext && (darwin || ios)
-// +build ts_macext
-// +build darwin ios
 
 package ipnlocal
 

ipn/ipnlocal/ssh.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux || (darwin && !ios)
-// +build linux darwin,!ios
 
 package ipnlocal
 

ipn/ipnlocal/ssh_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux || (darwin && !ios)
-// +build linux darwin,!ios
 
 package ipnlocal
 

ipn/ipnserver/proxyconnect.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !js
-// +build !js
 
 package ipnserver
 

ipn/localapi/cert.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !ios && !android && !js
-// +build !ios,!android,!js
 
 package localapi
 

ipn/localapi/cert_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !ios && !android && !js
-// +build !ios,!android,!js
 
 package localapi
 

ipn/localapi/disabled_stubs.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build ios || android || js
-// +build ios android js
 
 package localapi
 

ipn/localapi/profile.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !ios && !android && !js
-// +build !ios,!android,!js
 
 // We don't include it on mobile where we're more memory constrained and
 // there's no CLI to get at the results anyway.

ipn/store/awsstore/store_aws.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux && !ts_omit_aws
-// +build linux,!ts_omit_aws
 
 // Package awsstore contains an ipn.StateStore implementation using AWS SSM.
 package awsstore

ipn/store/awsstore/store_aws_stub.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !linux || ts_omit_aws
-// +build !linux ts_omit_aws
 
 package awsstore
 

ipn/store/awsstore/store_aws_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 package awsstore
 

log/logheap/logheap.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !js
-// +build !js
 
 // Package logheap logs a heap pprof profile.
 package logheap

logtail/filch/filch_unix.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !windows && !js
-// +build !windows,!js
 
 package filch
 

metrics/fds_notlinux.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !linux
-// +build !linux
 
 package metrics
 

net/dns/debian_resolvconf.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux || freebsd || openbsd
-// +build linux freebsd openbsd
 
 package dns
 

net/dns/flush_default.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !windows
-// +build !windows
 
 package dns
 

net/dns/ini.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows
-// +build windows
 
 package dns
 

net/dns/ini_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows
-// +build windows
 
 package dns
 

net/dns/manager_default.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !linux && !freebsd && !openbsd && !windows && !darwin
-// +build !linux,!freebsd,!openbsd,!windows,!darwin
 
 package dns
 

net/dns/nm.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 package dns
 

net/dns/openresolv.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux || freebsd || openbsd
-// +build linux freebsd openbsd
 
 package dns
 

net/dns/resolvconf.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux || freebsd || openbsd
-// +build linux freebsd openbsd
 
 package dns
 

net/dns/resolvd.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build openbsd
-// +build openbsd
 
 package dns
 

net/dns/resolved.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 package dns
 

net/dns/resolver/macios_ext.go

@@ -3,8 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build ts_macext && (darwin || ios)
-// +build ts_macext
-// +build darwin ios
 
 package resolver
 

net/dnsfallback/update-dns-fallbacks.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
-// +build ignore
 
 package main
 

net/interfaces/interfaces_bsd.go

@@ -6,7 +6,6 @@
 // BSD systems (e.g. OpenBSD) but has not been tested.
 
 //go:build darwin || freebsd
-// +build darwin freebsd
 
 package interfaces
 

net/interfaces/interfaces_default_route_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux || (darwin && !ts_macext)
-// +build linux darwin,!ts_macext
 
 package interfaces
 

net/interfaces/interfaces_defaultrouteif_todo.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !linux && !windows && !darwin && !freebsd
-// +build !linux,!windows,!darwin,!freebsd
 
 package interfaces
 

net/interfaces/interfaces_freebsd.go

@@ -5,7 +5,6 @@
 // This might work on other BSDs, but only tested on FreeBSD.
 
 //go:build freebsd
-// +build freebsd
 
 package interfaces
 

net/netns/netns_android.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build android
-// +build android
 
 package netns
 

net/netns/netns_darwin_tailscaled.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin && !ts_macext
-// +build darwin,!ts_macext
 
 package netns
 

net/netns/netns_default.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build (!linux && !windows && !darwin) || (darwin && ts_macext)
-// +build !linux,!windows,!darwin darwin,ts_macext
 
 package netns
 

net/netns/netns_linux.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux && !android
-// +build linux,!android
 
 package netns
 

net/netns/netns_macios.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin || ios
-// +build darwin ios
 
 package netns
 

net/netns/socks.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !ios && !js
-// +build !ios,!js
 
 package netns
 

net/netstat/netstat_noimpl.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !windows
-// +build !windows
 
 package netstat
 

net/portmapper/disabled_stubs.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build js
-// +build js
 
 package portmapper
 

net/portmapper/upnp.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !js
-// +build !js
 
 // (no raw sockets in JS/WASM)
 

net/routetable/routetable_bsd.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin || freebsd
-// +build darwin freebsd
 
 package routetable
 

net/routetable/routetable_bsd_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin || freebsd
-// +build darwin freebsd
 
 package routetable
 

net/routetable/routetable_darwin.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin
-// +build darwin
 
 package routetable
 

net/routetable/routetable_freebsd.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build freebsd
-// +build freebsd
 
 package routetable
 

net/routetable/routetable_linux.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 package routetable
 

net/routetable/routetable_linux_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 package routetable
 

net/stun/stun_fuzzer.go

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 //go:build gofuzz
-// +build gofuzz
 
 package stun
 

net/tlsdial/deps_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build for_go_mod_tidy_only
-// +build for_go_mod_tidy_only
 
 package tlsdial
 

net/tsdial/peerapi_macios_ext.go

@@ -7,8 +7,6 @@
 // and System Extension). It's not used on tailscaled-on-macOS.
 
 //go:build ts_macext && (darwin || ios)
-// +build ts_macext
-// +build darwin ios
 
 package tsdial
 

net/tshttpproxy/tshttpproxy_future.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build tailscale_go
-// +build tailscale_go
 
 // We want to use https://github.com/golang/go/issues/41048 but it's only in the
 // Tailscale Go tree for now. Hence the build tag above.

net/tshttpproxy/tshttpproxy_linux.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 package tshttpproxy
 

net/tshttpproxy/tshttpproxy_synology.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 package tshttpproxy
 

net/tshttpproxy/tshttpproxy_synology_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 package tshttpproxy
 

net/tstun/ifstatus_noop.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !windows
-// +build !windows
 
 package tstun
 

net/tstun/linkattrs_notlinux.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !linux
-// +build !linux
 
 package tstun
 

net/tstun/tap_unsupported.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !linux
-// +build !linux
 
 package tstun
 

net/tstun/tun.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !js
-// +build !js
 
 // Package tun creates a tuntap device, working around OS-specific
 // quirks if necessary.

net/tstun/tun_macos.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin && !ios
-// +build darwin,!ios
 
 package tstun
 

net/tstun/tun_notwindows.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !windows
-// +build !windows
 
 package tstun
 

paths/paths_unix.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !windows && !js
-// +build !windows,!js
 
 package paths
 

portlist/netstat.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !ios && !js
-// +build !ios,!js
 
 package portlist
 

portlist/netstat_exec.go

@@ -3,9 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build (windows || freebsd || openbsd || darwin) && !ios && !js
-// +build windows freebsd openbsd darwin
-// +build !ios
-// +build !js
 
 package portlist