cmd/fix: remove all functionality except for buildtag

For #73605

Change-Id: I4b46b5eb72471c215f2cc208c1b0cdd1fbdbf81a
Reviewed-on: https://go-review.googlesource.com/c/go/+/695855
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Alan Donovan <adonovan@google.com>

1 files changed, 2 insertions, 61 deletions

diff --git a/src/cmd/fix/gotypes.go b/src/cmd/fix/gotypes.go
index 6085816ada..987dab5d02 100644
--- a/src/cmd/fix/gotypes.go
+++ b/src/cmd/fix/gotypes.go
@@ -4,11 +4,6 @@
 
 package main
 
-import (
-	"go/ast"
-	"strconv"
-)
-
 func init() {
 	register(gotypesFix)
 }
@@ -16,60 +11,6 @@ func init() {
 var gotypesFix = fix{
 	name: "gotypes",
 	date: "2015-07-16",
-	f:    gotypes,
-	desc: `Change imports of golang.org/x/tools/go/{exact,types} to go/{constant,types}`,
-}
-
-func gotypes(f *ast.File) bool {
-	fixed := fixGoTypes(f)
-	if fixGoExact(f) {
-		fixed = true
-	}
-	return fixed
-}
-
-func fixGoTypes(f *ast.File) bool {
-	return rewriteImport(f, "golang.org/x/tools/go/types", "go/types")
-}
-
-func fixGoExact(f *ast.File) bool {
-	// This one is harder because the import name changes.
-	// First find the import spec.
-	var importSpec *ast.ImportSpec
-	walk(f, func(n any) {
-		if importSpec != nil {
-			return
-		}
-		spec, ok := n.(*ast.ImportSpec)
-		if !ok {
-			return
-		}
-		path, err := strconv.Unquote(spec.Path.Value)
-		if err != nil {
-			return
-		}
-		if path == "golang.org/x/tools/go/exact" {
-			importSpec = spec
-		}
-
-	})
-	if importSpec == nil {
-		return false
-	}
-
-	// We are about to rename exact.* to constant.*, but constant is a common
-	// name. See if it will conflict. This is a hack but it is effective.
-	exists := renameTop(f, "constant", "constant")
-	suffix := ""
-	if exists {
-		suffix = "_"
-	}
-	// Now we need to rename all the uses of the import. RewriteImport
-	// affects renameTop, but not vice versa, so do them in this order.
-	renameTop(f, "exact", "constant"+suffix)
-	rewriteImport(f, "golang.org/x/tools/go/exact", "go/constant")
-	// renameTop will also rewrite the imported package name. Fix that;
-	// we know it should be missing.
-	importSpec.Name = nil
-	return true
+	f:    noop,
+	desc: `Change imports of golang.org/x/tools/go/{exact,types} to go/{constant,types} (removed)`,
 }