Make the fragment title can’t searchable

we shouldn't take users so deep into the settings IA because it's easy
to feel lost in settings after clicking on a result without additional
context.

Bug: 143055215
Test: robotest & manual
Change-Id: I337cb5ead31e1e4e7bf9be78132e90630f83ee43

src/com/android/settings/homepage/TopLevelSettings.java

@@ -100,12 +100,5 @@ public class TopLevelSettings extends DashboardFragment implements
     }
 
     public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
-            new BaseSearchIndexProvider(R.xml.top_level_settings) {
-
-                @Override
-                protected boolean isPageSearchEnabled(Context context) {
-                    // Never searchable, all entries in this page are already indexed elsewhere.
-                    return false;
-                }
-            };
+            new BaseSearchIndexProvider(R.xml.top_level_settings);
 }