Revert "Frameworks: SlimPie give user ability to reduce trigger heights if IME keyboard shows (1/2)"

This reverts commit 7a8fd709f75077e9029d281ebaf9e0f035e83dfa.
Revert "Framworks: clean up the AOSP tablet icon mess"

This reverts commit 795b524777cb4bf50a848a957b0fbb54dc9e51c6.
Revert "Frameworks: fix navbar and pie icons for tablets and RTL"

This reverts commit f99f6dd5cef2fa8fae2e2dac4663dd4c98655e62.
Revert "Add back navigation ring customization."

This reverts commit 312b5233d9bd95b94f1bae0384606b42df8ed1b0.

Change-Id: I81af5e522eadf17c92ecca7691ec16b1eb6f5e32

Conflicts:

	core/java/com/android/internal/util/cm/NavigationRingConstants.java
	core/java/com/android/internal/util/cm/NavigationRingHelpers.java
	packages/SystemUI/src/com/android/systemui/cm/ActionTarget.java