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

chrome/test/data/webui/settings/protocol_handlers_tests.js

Index: chrome/test/data/webui/settings/protocol_handlers_tests.js
diff --git a/chrome/test/data/webui/settings/protocol_handlers_tests.js b/chrome/test/data/webui/settings/protocol_handlers_tests.js
index 8ec96f8c56d5ef6e23c5eeaa72a4bda3a0361a45..54817298c1769a67de27dd25cd3fecd652c667f7 100644
--- a/chrome/test/data/webui/settings/protocol_handlers_tests.js
+++ b/chrome/test/data/webui/settings/protocol_handlers_tests.js
@@ -54,12 +54,6 @@ cr.define('protocol_handlers', function() {
        */
       var browserProxy = null;
 
-      // Import necessary html before running suite.
-      suiteSetup(function() {
-        return PolymerTest.importHtml(
-           'chrome://md-settings/site_settings/protocol_handlers.html');
-      });
-
       setup(function() {
         browserProxy = new TestSiteSettingsPrefsBrowserProxy();
         settings.SiteSettingsPrefsBrowserProxyImpl.instance_ = browserProxy;