WallpaperPicker: materialize delete icon

Change-Id: I31be9516266f939f7d8ae097ad8ec4c41dea2df7
Signed-off-by: Joey Rizzoli <joey@lineageos.it>
(cherry picked from commit 66b854f613cdd4d73ff166edc7681a1c779672c6)
2 files changed