SystemUI: Clean up old H+ drawables causing issues on manta

These drawables seem to be adapted to fit the old combined
tablet status bar. They mistakenly gets used on manta with
an oversized H+ drawable as a result.

Change-Id: Iefc0e997e31508ea98f10e5b399ce6569a4a3a44
Pie Controls: Fix snap points position.

This commit reverts an error, introduced by the second pie
service commit, which causes the positions where the snap points
gets displayed to be inverted.

Change-Id: Iedaf6d4773c9ae45fb685d724fad6c35ecdeddf0
Pie Controls: Fix sound effects.

After the pie service commits, sound effects were broken for
HOME and BACK keys.

This commit fixes this, by moving the play back of the sound
effect from the injection directly to the onClick().

Change-Id: Id59848ccddac20cef80500f6e72d76afa97ae093