[email protected]: don't set GOTOOLCHAIN=local

Formula/g/go@1.22.rb

@@ -4,6 +4,7 @@ class GoAT122 < Formula
   url "https://go.dev/dl/go1.22.10.src.tar.gz"
   mirror "https://fossies.org/linux/misc/go1.22.10.src.tar.gz"
   sha256 "1e94fd48be750d1fafb4d9b3b6dd31a6e9d2735d339bf2462bc97b64ca4c1037"
+  revision 1
   license "BSD-3-Clause"
 
   livecheck do
@@ -33,8 +34,6 @@ class GoAT122 < Formula
   depends_on "go" => :build
 
   def install
-    inreplace "go.env", /^GOTOOLCHAIN=.*$/, "GOTOOLCHAIN=local"
-
     cd "src" do
       ENV["GOROOT_FINAL"] = libexec
       # Set portable defaults for CC/CXX to be used by cgo
@@ -53,17 +52,7 @@ def install
     rm_r(libexec/"src/runtime/pprof/testdata")
   end
 
-  def caveats
-    <<~EOS
-      Homebrew's Go toolchain is configured with
-        GOTOOLCHAIN=local
-      per Homebrew policy on tools that update themselves.
-    EOS
-  end
-
   test do
-    assert_equal "local", shell_output("#{bin}/go env GOTOOLCHAIN").strip
-
     (testpath/"hello.go").write <<~GO
       package main