Remove deprecated chrome.pageActions api functions

chrome/renderer/resources/extensions/page_actions_custom_bindings.js

-// Copyright (c) 2012 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.
-
-// Custom binding for the pageActions API.
-
-var binding = require('binding').Binding.create('pageActions');
-
-var Event = require('event_bindings').Event;
-var pageActionsNatives = requireNative('page_actions');
-
-binding.registerCustomHook(function(bindingsAPI, extensionId) {
-  var pageActions = pageActionsNatives.GetCurrentPageActions(extensionId);
-  var pageActionsApi = bindingsAPI.compiledApi;
-  var oldStyleEventName = 'pageActions';
-  for (var i = 0; i < pageActions.length; ++i) {
-    // Setup events for each extension_id/page_action_id string we find.
-    pageActionsApi[pageActions[i]] = new Event(oldStyleEventName);
-  }
-});
-
-exports.binding = binding.generate();