Revert "Change launcher icons to MaskableIconDrawable Test: manual test"

This reverts commit a8bd6c1bb8a1f1d7d7d589b2c9339f8201522405.

Change-Id: Iad92e544854776dcb9c4d7d3feeb2ac1b2a411d9
(cherry picked from commit 728d0bc4a0118db753209d088dc65ac6f4705bcc)
7 files changed