Screenshot Delete thanks to DvTonder and

PA where I saw this patch. Changes to original:

minor cleanup + added all needed drawables (xxhpdi and mpdi)

Change-Id: Id458312cd6a66d12caa6ceffba3ba13547caa939
Signed-off-by: Andre Saddler <dresadd09691@gmail.com>

Conflicts:

	packages/SystemUI/res/values/slim_strings.xml