Remove status bar manipulation from EmergencyDialer

Remove the code that prevents the swipe-down from working in the
emergency dialer -- doing it in onResume/onPause seems to be unreliable
and causes the bar to be permanently disabled.

Test: manual
Bug: 63110538
Bug: 62152913
Change-Id: I9edb973d7fe94ad7d4b9c51764a22c7e9788b447
1 file changed