Fix wallpaper offset

Change-Id: If023e1f7f6dfe0d4caf5d88dfa6af6ae6d4031a4
Revert "Launcher: Fullscreen Mode"

(reverse-merged from commit 54c408226a92589fcd56c427e2e68e3dbce196dd)

This is reverted because we use Pinch to enable expanded desktop from PA's Launcher2

Change-Id: If1d203bd86380ced0e9721dec46cf702f91951ea