Remove logic for adding a search icon to action bar.

No longer used given that we don't show the search icon on any page.
The main settings page now has the search bar.

Change-Id: I9535028298739467e7fa9c75d1a2fb2b2fa3251b
Fixes: 62230804
Bug: 37477506
Test: robotests

src/com/android/settings/search/SearchFeatureProvider.java

@@ -36,14 +36,6 @@ public interface SearchFeatureProvider {
      */
     boolean isEnabled(Context context);
 
-    /**
-     * Inserts the Menu items into Settings activity.
-     *
-     * @param menu Items will be inserted into this menu.
-     * @param activity The activity that precedes SearchActivity.
-     */
-    void setUpSearchMenu(Menu menu, Activity activity);
-
     /**
      * Returns a new loader to search in index database.
      */