[bootstrapper] Remove Intl experimental natives files

src/js/prologue.js

 // 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.
 
 (function(global, utils, extrasUtils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 185 matching lines @@
   %ToFastProperties(filtered_exports);
   exports_container = filtered_exports;
 
   utils.PostNatives = UNDEFINED;
   utils.ImportFromExperimental = UNDEFINED;
 }
 
 
 function PostExperimentals(utils) {
   %CheckIsBootstrapping();
-  %ExportExperimentalFromRuntime(exports_container);
   for ( ; !IS_UNDEFINED(imports); imports = imports.next) {
     imports(exports_container);
   }
   for ( ; !IS_UNDEFINED(imports_from_experimental);
           imports_from_experimental = imports_from_experimental.next) {
     imports_from_experimental(exports_container);
   }
 
   utils.Export = UNDEFINED;
   utils.PostDebug = UNDEFINED;
@@ skipping 95 matching lines @@
   %promise_internal_reject(promise, reason, true);
 }
 
 extrasUtils.markPromiseAsHandled = function markPromiseAsHandled(promise) {
   %PromiseMarkAsHandled(promise);
 };
 
 %ToFastProperties(extrasUtils);
 
 })