diff --git a/src/cmd/compile/internal/base/print.go b/src/cmd/compile/internal/base/print.go
index efd70f7cc5..cc36acec4b 100644
--- a/src/cmd/compile/internal/base/print.go
+++ b/src/cmd/compile/internal/base/print.go
@@ -146,11 +146,6 @@ func ErrorfAt(pos src.XPos, code errors.Code, format string, args ...interface{}
 	}
 }
 
-// ErrorfVers reports that a language feature (format, args) requires a later version of Go.
-func ErrorfVers(lang string, format string, args ...interface{}) {
-	Errorf("%s requires %s or later (-lang was set to %s; check go.mod)", fmt.Sprintf(format, args...), lang, Flag.Lang)
-}
-
 // UpdateErrorDot is a clumsy hack that rewrites the last error,
 // if it was "LINE: undefined: NAME", to be "LINE: undefined: NAME in EXPR".
 // It is used to give better error messages for dot (selector) expressions.
diff --git a/src/cmd/compile/internal/noder/unified.go b/src/cmd/compile/internal/noder/unified.go
index e534f0b725..59a3536000 100644
--- a/src/cmd/compile/internal/noder/unified.go
+++ b/src/cmd/compile/internal/noder/unified.go
@@ -5,8 +5,6 @@
 package noder
 
 import (
-	"fmt"
-	"internal/goversion"
 	"internal/pkgbits"
 	"io"
 	"runtime"
@@ -74,13 +72,6 @@ func unified(m posMap, noders []*noder) {
 
 	data := writePkgStub(m, noders)
 
-	// We already passed base.Flag.Lang to types2 to handle validating
-	// the user's source code. Bump it up now to the current version and
-	// re-parse, so typecheck doesn't complain if we construct IR that
-	// utilizes newer Go features.
-	base.Flag.Lang = fmt.Sprintf("go1.%d", goversion.Version)
-	types.ParseLangFlag()
-
 	target := typecheck.Target
 
 	localPkgReader = newPkgReader(pkgbits.NewPkgDecoder(types.LocalPkg.Path, data))