Flag cleanup.

Cleanup the
com.android.settings.flags.utils_return_user_handle_for_current_user_id
flag and references from the codebase.

Fix: 414636499
Flag: EXEMPT removing android.multiuser.ignore_restrictions_when_deleting_private_profile
Test: presubmit
Change-Id: I504c10118778029aa8daacd18da51593a7508b66
2 files changed