Remove --harmony-arrow-functions flag

test/mjsunit/harmony/regress/regress-4056.js

Index: test/mjsunit/harmony/regress/regress-4056.js
diff --git a/test/mjsunit/harmony/regress/regress-4056.js b/test/mjsunit/harmony/regress/regress-4056.js
deleted file mode 100644
index d938df0be088185f1990e4b253c5d5c300c39f1f..0000000000000000000000000000000000000000
--- a/test/mjsunit/harmony/regress/regress-4056.js
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright 2015 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-arrow-functions
-
-function strictFunctionArrowEval(s) {
-  "use strict";
-  return (()=>eval(s))();
-};
-
-assertEquals(strictFunctionArrowEval("42"), 42)