locksettings: miscellaneous logging cleanups

Clean up a few log messages that didn't fit into any of the previous
changes.  This includes removing the last uses of the DEBUG field.

Bug: 268526331
Change-Id: Iee462825434c5a5042e1ddc4dfbb95579d339d40
Merged-In: Iee462825434c5a5042e1ddc4dfbb95579d339d40
(cherry picked from commit 50e87895)