Revert "Lockscreen blur: after the screenshot is taken, handle the rest of the bitmap preparation async with display state change"

Breaks blur... but something like this might be tight... to reduce the screen off lag

This reverts commit 172882a0db546281719324c94ab28d3937e7709c.

Change-Id: Ie9607799e4e91f066fdf9b52805871dcc9a47a04
Merge "Revert "Lockscreen blur: after the screenshot is taken, handle the rest of the bitmap preparation async with display state change"" into kk44