Moving prediction icons back into recycler view.

- Fixes two accessibility issues with the prediction bar being
  separate from the rest of the list of icons related to scrolling
  and switch access.

Bug: 21725276
Change-Id: Ibc48e5028cace9a77000e6646b951f021910465d

src/com/android/launcher3/allapps/DefaultAppSearchController.java

@@ -125,8 +125,7 @@ final class DefaultAppSearchController extends AllAppsSearchBarController
 
     @Override
     public boolean shouldShowPredictionBar() {
-        // Keep showing the prediction bar if the input query is empty
-        return mSearchBarEditView.getEditableText().toString().isEmpty();
+        return false;
     }
 
     @Override