Bug 1360788 - Part 2: Remove some dead code that is left over from bug 1077652

browser/base/content/test/newtab/head.js

@@ -77,13 +77,6 @@ registerCleanupFunction(function() {
     }
   });
 
-  // Stop any update timers to prevent unexpected updates in later tests
-  let timer = NewTabUtils.allPages._scheduleUpdateTimeout;
-  if (timer) {
-    clearTimeout(timer);
-    delete NewTabUtils.allPages._scheduleUpdateTimeout;
-  }
-
   Services.prefs.clearUserPref(PREF_NEWTAB_ENABLED);
   Services.prefs.setCharPref(PREF_NEWTAB_DIRECTORYSOURCE, gOrigDirectorySource);