Remove app_remoting.

remoting/webapp/app_remoting/vendor/arv_main.js

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-'use strict';
-
-/** @suppress {duplicate} */
-var remoting = remoting || {};
-
-/**
- * Entry point ('load' handler) for App Remoting webapp.
- */
-remoting.startAppRemoting = function() {
-  var options = {
-    // This string is overwritten with the actual app id by the build script.
-    appId: 'APP_REMOTING_APPLICATION_ID',
-
-    // This string is overwritten with the actual capabilities required by
-    // this application.
-    appCapabilities: ['APPLICATION_CAPABILITIES'],
-  };
-
-  var app = new remoting.AppRemoting(options);
-  app.start();
-};
-
-window.addEventListener('load', remoting.startAppRemoting, false);