LockSettingsService: remove obsolete EventLog logging

As per go/asa-remove-safetynet-fix-requirement, EventLog statements that
were added for SafetyNet are deprecated and can be removed.

Test: presubmit
Change-Id: Idc5ff9171d3f40676183c2f5460886adff288f09
Merged-In: Idc5ff9171d3f40676183c2f5460886adff288f09
(cherry picked from commit 18346d8f)