Disable security view transitions in keyguard

Now that we have a single stage unlock, there's no need for the transition. This
was causing unnecessary flickering to happen in views where we add the security view
just after inflation, which triggers the animation.

Fixes bug 7343632

Change-Id: I5bb8e37df66e4d96f00719e318424d46bf0e2e5a
1 file changed