MD Settings: Remove some unhelpful properties

chrome/browser/resources/settings/basic_page/basic_page.js

 // Copyright 2015 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.
 
 /**
  * @fileoverview
  * 'settings-basic-page' is the settings page containing the basic settings.
  */
 Polymer({
   is: 'settings-basic-page',
@@ skipping 24 matching lines @@
      */
     showResetProfileBanner_: {
       type: Boolean,
       value: function() {
         return loadTimeData.getBoolean('showResetProfileBanner');
       },
     },
 
   },
 
-  /**
-   * @type {string} Selector to get the sections.
-   * TODO(michaelpg): replace duplicate docs with @override once b/24294625
-   * is fixed.
-   */
-  sectionSelector: 'settings-section',
-
   onResetDone_: function() {
     this.showResetProfileBanner_ = false;
   },
 });