Fix issue where item gets added to folder when displacing folder (issue 6576460)

Change-Id: I6999d97a7aa35d2aa348ca350f89765abb674089
diff --git a/src/com/android/launcher2/Workspace.java b/src/com/android/launcher2/Workspace.java
index e906733..ba51889 100644
--- a/src/com/android/launcher2/Workspace.java
+++ b/src/com/android/launcher2/Workspace.java
@@ -2839,7 +2839,6 @@
 
         if (willAddToFolder && mDragMode == DRAG_MODE_NONE) {
             mDragOverFolderIcon = ((FolderIcon) dragOverView);
-            mAddToExistingFolderOnDrop = true;
             mDragOverFolderIcon.onDragEnter(info);
             if (targetLayout != null) {
                 targetLayout.clearDragOutlines();