Revert "Framworks: disable observer and receiver if PIE is disabled"

This reverts commit a66f8caeb9a20aa3df90a4a32f9b095068b2449d.
Revert "Allow pie to be used without expandeddesktopstate"

This reverts commit 8f79fd5d3f8263f19455d07347e4de625cf6eb7b.
Revert "Merge Navigation Bar and Pie Controls button config (1/2)"

This reverts commit 1c601ac8dde76d68e3824191e675256b47e0493f.

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/policy/PieController.java
Revert "Fix pie controls being disabled by launcher gestures."

This reverts commit f4a1118d1b5dc04ddfa1fc0f07de13b8c1143495.
Revert "Add pie control optimizations for Phone UI."

This reverts commit da062dc61ce6285caad889a0b7abe3232cc03790.
Revert "Bringing basic pie controls to CyanogenMod. (1/2)"

This reverts commit 9422b3f060892e55e509a11b3f35e8320f0ddc19.

Conflicts:
	packages/SystemUI/res/values/colors.xml
	packages/SystemUI/res/values/strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/pie/PieItem.java
	packages/SystemUI/src/com/android/systemui/statusbar/pie/PieLayout.java
	packages/SystemUI/src/com/android/systemui/statusbar/policy/PieController.java