Revert "QS: Add flippable tiles"

This reverts commit c50b4dbecc434fbc11ba4efc08c518f26599fccb.

Conflicts:

	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettings.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsBasicTile.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsModel.java