Remove unused support for "pattern ever chosen"

isPatternEverChosen() is no longer used by anyone, so remove it along
with the code that stored the value in the locksettings database.

Bug: 270013005
Change-Id: I096da21b67dce878caff65d9a310fc16138c0b59
Merged-In: I096da21b67dce878caff65d9a310fc16138c0b59
(cherry picked from commit 1347d90692d9d37f4127e6c04f4eb0679f2eef64)
3 files changed