Revert "Play the video on top of lock screen"

This reverts commit 417f074dbcf07843bf02e762c2fe3b23fe8af32b.

From the discussion in the bug, for Carlsbad, we will take 
the JBMR2 approach for safety concern.

Change-Id: Ieae45e1ae7580c94c08277e580b123e6f504a3b4
bug:11190995
1 file changed