revert 'SystemUI: fix long pressing notifications'

Stops the intent from firing off when long pressing
for the menu.

Signed-off-by: Roman Birg <romanbirg@gmail.com> (reverse-merged from commit 9f78d1dfeb364f6f8231e81f0b78add17e24ade3)

This was preventing back btn from closing the notification pulldown when expanded.
Fix home button especially hardware firing off the longpress intent.