Framework: Remove Needless Preference

PS2: Missed Line
Change-Id: Ie220b7eb2c16d0ce81c444eea5936c681ea55a9a

Conflicts:
	core/java/android/provider/Settings.java
Frameworks: recreate on theme change SlimPIE as well

like the navigation bar commit let us reconstruct pie
on theme change as well

Change-Id: I36d596dc1677dbc0cc5fb8ed8ad725f717698285

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java