MD Settings: change outlinks to actually use <a>

chrome/browser/resources/settings/printing_page/cloud_printers.js

 // Copyright 2016 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-cloud-printers' is a component for showing Google
  * Cloud Printer settings subpage (chrome://md-settings/cloudPrinters).
  */
 // TODO(xdai): Rename it to 'settings-cloud-printers-page'.
 Polymer({
   is: 'settings-cloud-printers',
 
   properties: {
     prefs: {
       type: Object,
       notify: true,
     },
   },
-
-  /** @private */
-  onManageTap_: function() {
-    window.open(loadTimeData.getString('devicesUrl'));
-  },
 });