Remove the "Settings" packaged app

chrome/browser/resources/options/options_page.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.
 
 cr.define('options', function() {
   /** @const */ var FocusOutlineManager = cr.ui.FocusOutlineManager;
 
   var OptionsPage = {
     /**
      * This is the absolute difference maintained between standard and
@@ skipping 67 matching lines @@
      */
     setPepperFlashSettingsEnabled: function(enabled) {
       if (enabled) {
         document.documentElement.setAttribute(
             'enablePepperFlashSettings', '');
       } else {
         document.documentElement.removeAttribute(
             'enablePepperFlashSettings');
       }
     },
-
-    /**
-     * Sets whether Settings is shown as a standalone page in a window for the
-     * app launcher settings "app".
-     * @param {boolean} isSettingsApp Whether this page is shown standalone.
-     */
-    setIsSettingsApp: function(isSettingsApp) {
-      document.documentElement.classList.toggle('settings-app', isSettingsApp);
-    },
-
-    /**
-     * Returns true if Settings is shown as an "app" (in a window by itself)
-     * for the app launcher settings "app".
-     * @return {boolean} Whether this page is shown standalone.
-     */
-    isSettingsApp: function() {
-      return document.documentElement.classList.contains('settings-app');
-    },
   };
 
   // Export
   return {
     OptionsPage: OptionsPage
   };
 });