fixup! fs: improve error perf of sync chmod+fchmod

Author: CanadaHonk

lib/internal/fs/sync.js

@@ -105,11 +105,6 @@ function fchmod(fd, mode) {
   return binding.fchmodSync(fd, mode);
 }
 
-function unlink(path) {
-  path = pathModule.toNamespacedPath(getValidatedPath(path));
-  return binding.unlinkSync(path);
-}
-
 module.exports = {
   readFileUtf8,
   exists,