Cleaning up drag state management.

When the drag is started, the UI automatically goes into spring loaded mode. On a successful
drop, it is the responsibility of the {@link DropTarget} to exit out of the spring loaded
mode. If the drop was cancelled for some reason, the UI will automatically exit out of this mode.

Bug: 34692289
Change-Id: Ic611739a43bb8d9279b587aaee3039326c143e8b
diff --git a/src/com/android/launcher3/DragSource.java b/src/com/android/launcher3/DragSource.java
index c6106c2..93f865c 100644
--- a/src/com/android/launcher3/DragSource.java
+++ b/src/com/android/launcher3/DragSource.java
@@ -30,5 +30,5 @@
      * A callback made back to the source after an item from this source has been dropped on a
      * DropTarget.
      */
-    void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, boolean success);
+    void onDropCompleted(View target, DragObject d, boolean success);
 }