Revert "Added support for multiple navigation key bars"

This reverts commit bdb77c6a47c8fcc474977569f095850474cd4801.
Revert "Add pie control optimizations for Phone UI."

This reverts commit 02d2658be241ca305da7a5eda177146841366770.
Revert "PIE: 3 errors"

This reverts commit b357c06476b75760599c875debd522be246a633e.
Revert "Bringing basic pie controls to CyanogenMod. (1/2)"

This reverts commit 3c62ef5ed32d4253c0c6ed88475dc60b8998af82.