Stop setting original icon visible when dragging app with shortcuts.

- This was leaving a "ghost" icon behind, which looked really weird.
- We still need to make it visible for All Apps, or else you can get
  in a state where the icon is gone from all apps indefinitely.

Bug: 30465972
Change-Id: I79eacf2dfdb0cd267732ae63ef69a9bb193933a5
1 file changed