Revert "On device lockdown, always show the keyguard"

This reverts commit c851ef6d27bf7d3193c85170706a67fb6185981a.

Reason for revert: b/300463732 regression
Bug: 300463732
Bug: 218495634
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:eaa129138096bc00b663bca93a5af9786aa47154)
Merged-In: I314e5615b798487d9a965eaa0937905b65aa85fc
Change-Id: I314e5615b798487d9a965eaa0937905b65aa85fc
2 files changed