PIE: slight style change

Change-Id: I95c77a72d712a55fca38e259649eba7930fd15f5

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/Halo.java
	packages/SystemUI/src/com/android/systemui/statusbar/view/PieMenu.java
This avoid a conflict in PieMenu.java with bb merging
Pie: remove unused variable