MD Settings: change outlinks to actually use <a>

chrome/browser/resources/settings/a11y_page/a11y_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-a11y-page' is the small section of advanced settings with
  * a link to the web store accessibility page on most platforms, and
  * a subpage with lots of other settings on Chrome OS.
  */
@@ skipping 31 matching lines @@
       },
     },
   },
 
 // <if expr="chromeos">
   /** @private */
   onManageAccessibilityFeaturesTap_: function() {
     settings.navigateTo(settings.Route.MANAGE_ACCESSIBILITY);
   },
 // </if>
-
-  /** @private */
-  onMoreFeaturesTap_: function() {
-    window.open(
-        'https://chrome.google.com/webstore/category/collection/accessibility');
-  },
 });