Fixes loop in Fingerprint Enrollment

Remove "Try again" in error dialog, since credential has timed out and
user needs to use pin/password/pattern before being able to enroll
fingerprint

Bug: 258307019
Test: Try to enroll fingerprint after 10 minutes of entering credential,
timeout dialog is shown with only one button to avoid looping

Change-Id: Ibb9a9e2095a1277fa01adc8eb5ce04af1b9ce495