vendor slim: cleanup old depreciated overlays

we do not user this overlay anymore and will never
use them again

Change-Id: I41adf09b1613ab5bb16a0bd7c8d5641cba4ea89c
Merge remote-tracking branch 'Slim/kk4.4' into slim4.4

Conflicts:
	overlay/ledflash/packages/apps/Torch/res/values/config.xml