Revert "On device lockdown, always show the keyguard"

This reverts commit b23c2d5fb6630ea0da503b937f62880594b13e94.

Reason for revert: b/300463732 regression
Bug: 300463732
Bug: 218495634

Change-Id: I31485d0d8caa3060e998636b071dbe03f6b4fc82
Merged-In: Ida8f2ab5e4ac79b38c21ba7bacfe9c374c9cc600
Merged-In: I314e5615b798487d9a965eaa0937905b65aa85fc
Merged-In: I31485d0d8caa3060e998636b071dbe03f6b4fc82
1 file changed