chore(tsconnect): drop wasm pre-compression from build-pkg

Consumers are now responsible for compressing assets; the package ships
only the raw main.wasm binary.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cmd/tsconnect/build-pkg.go

@@ -14,7 +14,6 @@ import (
 
 	"github.com/tailscale/hujson"
 	"tailscale.com/cmd/tsconnect/wasmbuild"
-	"tailscale.com/util/precompress"
 	"tailscale.com/version"
 )
 
@@ -40,10 +39,6 @@ func runBuildPkg() {
 
 	runEsbuild(*buildOptions)
 
-	if err := precompressWasm(); err != nil {
-		log.Fatalf("Could not pre-recompress wasm: %v", err)
-	}
-
 	if err := writeBuildInfo(); err != nil {
 		log.Fatalf("Could not write %s: %v", wasmbuild.BuildInfoFile, err)
 	}
@@ -64,13 +59,6 @@ func runBuildPkg() {
 	log.Printf("Built package version %s", version.Long())
 }
 
-func precompressWasm() error {
-	log.Printf("Pre-compressing main.wasm...\n")
-	return precompress.Precompress(path.Join(*pkgDir, "main.wasm"), precompress.Options{
-		FastCompression: *fastCompression,
-	})
-}
-
 func updateVersion() error {
 	packageJSONBytes, err := os.ReadFile("package.json.tmpl")
 	if err != nil {