Remove --intl-extra flag

src/js/intl-extra.js

Index: src/js/intl-extra.js
diff --git a/src/js/intl-extra.js b/src/js/intl-extra.js
deleted file mode 100644
index a4d22568b9ff14413c604199756d92190c9ca630..0000000000000000000000000000000000000000
--- a/src/js/intl-extra.js
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2016 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) {
-
-"use strict";
-
-%CheckIsBootstrapping();
-
-var GlobalIntl = global.Intl;
-
-var AddBoundMethod = utils.ImportNow("AddBoundMethod");
-var IntlParseDate = utils.ImportNow("IntlParseDate");
-var IntlParseNumber = utils.ImportNow("IntlParseNumber");
-
-AddBoundMethod(GlobalIntl.DateTimeFormat, 'v8Parse', IntlParseDate, 1,
-               'dateformat');
-AddBoundMethod(GlobalIntl.NumberFormat, 'v8Parse', IntlParseNumber, 1,
-               'numberformat');
-
-})