Revert "[DO NOT MERGE] Keyguard was hiding occluding activities"

This reverts commit 267ecd151e8e7ad313cbe1a511f18d2d78f2e459.

Reason for revert: regression b/223088536

Change-Id: I5e82ad358a8c7c7027415ab55c5d7e5bd3c05527
1 file changed