Remove all harmony runtime flags which shipped in M51

src/js/harmony-regexp-exec.js

Index: src/js/harmony-regexp-exec.js
diff --git a/src/js/harmony-regexp-exec.js b/src/js/harmony-regexp-exec.js
deleted file mode 100644
index e2eece98aa58be068543beef048b3d47f053f8ff..0000000000000000000000000000000000000000
--- a/src/js/harmony-regexp-exec.js
+++ /dev/null
@@ -1,37 +0,0 @@
-// Copyright 2012 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.
-
-(function(global, utils) {
-
-%CheckIsBootstrapping();
-
-// -------------------------------------------------------------------
-// Imports
-
-var GlobalRegExp = global.RegExp;
-var RegExpSubclassExecJS = utils.ImportNow("RegExpSubclassExecJS");
-var RegExpSubclassMatch = utils.ImportNow("RegExpSubclassMatch");
-var RegExpSubclassReplace = utils.ImportNow("RegExpSubclassReplace");
-var RegExpSubclassSearch = utils.ImportNow("RegExpSubclassSearch");
-var RegExpSubclassSplit = utils.ImportNow("RegExpSubclassSplit");
-var RegExpSubclassTest = utils.ImportNow("RegExpSubclassTest");
-var matchSymbol = utils.ImportNow("match_symbol");
-var replaceSymbol = utils.ImportNow("replace_symbol");
-var searchSymbol = utils.ImportNow("search_symbol");
-var splitSymbol = utils.ImportNow("split_symbol");
-
-utils.OverrideFunction(GlobalRegExp.prototype, "exec",
-                       RegExpSubclassExecJS, true);
-utils.OverrideFunction(GlobalRegExp.prototype, matchSymbol,
-                       RegExpSubclassMatch, true);
-utils.OverrideFunction(GlobalRegExp.prototype, replaceSymbol,
-                       RegExpSubclassReplace, true);
-utils.OverrideFunction(GlobalRegExp.prototype, searchSymbol,
-                       RegExpSubclassSearch, true);
-utils.OverrideFunction(GlobalRegExp.prototype, splitSymbol,
-                       RegExpSubclassSplit, true);
-utils.OverrideFunction(GlobalRegExp.prototype, "test",
-                       RegExpSubclassTest, true);
-
-})