Don't show udfps disabled after biometric auth

The running state of fingerprint/face-auth changes before the keyguard
callbacks get called (ie: isKeyguardGoingAway / isKeyguardShowing), so
we need to double check whether the user has used biometrics to
authenticate to determine whether to show the grey circle.

Remove unused layout disabled_udfps_view.

Test: manual, atest SystemUITests
Fixes: 185951882
Change-Id: I573926059452037a639fd29838f43f277736819c