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.