Fixed notification background shifted in landscape

Using getLocationInWindow() will cause an extra distance(from 0 to the
left of the NotificationStackScrollLayout) to the left
bound of the background.

Remove getLocationInWindow() to fix it.

Fixes: 130502182
Test: manual - swipe an notification in landscape
Change-Id: I8f12a71a6820df1a1e26d954d5af95eededfb685
1 file changed