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

chrome/test/data/webui/settings/category_default_setting_tests.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 Suite of tests for category-default-setting. */
 cr.define('category_default_setting', function() {
   function registerTests() {
     suite('CategoryDefaultSetting', function() {
       /**
        * A site settings category created before each test.
@@ skipping 59 matching lines @@
         defaults: {
           cookies: {
             setting: 'session_only',
           },
         },
         exceptions: {
           cookies: [],
         },
       };
 
-      // Import necessary html before running suite.
-      suiteSetup(function() {
-        return PolymerTest.importHtml(
-           'chrome://md-settings/site_settings/category_default_setting.html');
-      });
-
       // Initialize a site-settings-category before each test.
       setup(function() {
         browserProxy = new TestSiteSettingsPrefsBrowserProxy();
         settings.SiteSettingsPrefsBrowserProxyImpl.instance_ = browserProxy;
         PolymerTest.clearBody();
         testElement = document.createElement('category-default-setting');
         testElement.subOptionLabel = "test label";
         document.body.appendChild(testElement);
       });
 
@@ skipping 149 matching lines @@
             prefsCookesSessionOnly, settings.ContentSettingsTypes.COOKIES,
             settings.PermissionValues.SESSION_ONLY, '#subOptionToggle');
       });
     });
   }
 
   return {
     registerTests: registerTests,
   };
 });