Remove transition from lock icon

A transition can only be applied to a container, and using the lock
parent is not an option, we were applying animations to views that
required a hard visibility transition (and messing up with notification
animations.)

Test: visual
Fixes: 131437765
Bug: 131179078
Change-Id: I2da67d17804a502c1a57d29a537e98fe4babe09f