all: convert more code to use net/netip directly

perl -i -npe 's,netaddr.IPPrefixFrom,netip.PrefixFrom,' $(git grep -l -F netaddr.)
    perl -i -npe 's,netaddr.IPPortFrom,netip.AddrPortFrom,' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPPrefix,netip.Prefix,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPPort,netip.AddrPort,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IP\b,netip.Addr,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPv6Raw\b,netip.AddrFrom16,g' $(git grep -l -F netaddr. )
    goimports -w .

Then delete some stuff from the net/netaddr shim package which is no
longer neeed.

Updates #5162

Change-Id: Ia7a86893fe21c7e3ee1ec823e8aba288d4566cd8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

tstest/integration/vms/vms_test.go

@@ -29,7 +29,6 @@ import (
 	expect "github.com/tailscale/goexpect"
 	"golang.org/x/crypto/ssh"
 	"golang.org/x/sync/semaphore"
-	"tailscale.com/net/netaddr"
 	"tailscale.com/tstest"
 	"tailscale.com/tstest/integration"
 	"tailscale.com/types/logger"
@@ -441,7 +440,7 @@ func (h *Harness) testDistro(t *testing.T, d Distro, ipm ipMapping) {
 
 	for _, tt := range []struct {
 		ipProto string
-		addr    netaddr.IP
+		addr    netip.Addr
 	}{
 		{"ipv4", h.testerV4},
 	} {