Removed AccountSettings used in old IA only.

- remove AccountSettings and all related code that is used in old IA, so
that it will not show up in search.

Change-Id: I9f83112f760fd991caf89de109fde9e675b8c981
Fix: 34165913
Test: make RunSettingsRoboTests

src/com/android/settings/dashboard/conditional/WorkModeCondition.java

@@ -84,7 +84,7 @@ public class WorkModeCondition extends Condition {
     @Override
     public void onPrimaryClick() {
         mManager.getContext().startActivity(new Intent(mManager.getContext(),
-                Settings.AccountSettingsActivity.class));
+                Settings.UserAndAccountDashboardActivity.class));
     }
 
     @Override