MD Settings: Remove unnecessary importHtml() calls in site-settings tests.

chrome/test/data/webui/settings/site_list_tests.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 Suite of tests for site-list. */
 cr.define('site_list', function() {
   function registerTests() {
     suite('SiteList', function() {
       /**
        * A site list element created before each test.
@@ skipping 307 matching lines @@
             {
               embeddingOrigin: '',
               origin: 'chrome-extension://cfhgfbfpcbnnbibfphagcjmgjfjmojfa/',
               setting: 'block',
               source: 'preference',
             },
           ]
         }
       };
 
-      // Import necessary html before running suite.
       suiteSetup(function() {
         CrSettingsPrefs.setInitialized();
-        return PolymerTest.importHtml(
-            'chrome://md-settings/site_settings/site_list.html');
       });
 
       suiteTeardown(function() {
         CrSettingsPrefs.resetForTesting();
       });
 
       // Initialize a site-list before each test.
       setup(function() {
         browserProxy = new TestSiteSettingsPrefsBrowserProxy();
         settings.SiteSettingsPrefsBrowserProxyImpl.instance_ = browserProxy;
@@ skipping 543 matching lines @@
           assertEquals(settings.ContentSettingsTypes.JAVASCRIPT, args[2]);
           assertEquals('allow', args[3]);
         });
       });
     });
   }
   return {
     registerTests: registerTests,
   };
 });