Revert "Settings: Add HeadsUp setting."

Jesus no likey

This reverts commit 59bb8e73d0b02a79b4a46b4ecb576bd4e6f1bca9.

Change-Id: I77421156e042a6375098d8989b7d782b3884d044
Merge pull request #11 from AOSPA-legacy/kitkat

Revert "Settings: Add HeadsUp setting."