Implement ability to uninstall shortcuts from workspace

Change-Id: I14ca94ea719825c4de19ab85d67537155098d50c

src/com/android/launcher3/DragController.java

@@ -379,9 +379,11 @@ public class DragController {
     void onDeferredEndDrag(DragView dragView) {
         dragView.remove();
 
-        // If we skipped calling onDragEnd() before, do it now
-        for (DragListener listener : mListeners) {
-            listener.onDragEnd();
+        if (mDragObject.deferDragViewCleanupPostAnimation) {
+            // If we skipped calling onDragEnd() before, do it now
+            for (DragListener listener : mListeners) {
+                listener.onDragEnd();
+            }
         }
     }