Settings: Remove Wallpaper selection from Display

Let the launcher handle wallpaper selection.

Change-Id: I7f0eb20a5bc01d82fdb98905524b9743fee447c6
Signed-off-by: Roman Birg <roman@cyngn.com>
Merge branch 'cm-11.0' into kk_mkt

Conflicts:
	res/xml/display_settings.xml

Change-Id: I83942dfc5e2219cf41e86081025a5d8b2ebc5daa