Bug 861097 - [Buri][Beetle lite FF]The phone display date on status after power off animate  r=Etienne

 r=Etienne

After "ScreenManager.turnScreenOff(true)" it will fire screenchange event, So the icon for notification or date in status bar is showed after 3-rings animation.

I remove the reboot or poweroff code out the setTimeout in order to reboot or poweroff immediately.