Revert "Keyboard light: Fix the physical keyboard not light when it's visiable."

This reverts commit 9f7558bfac3ab11bbc428554b92c201b8ef78333.
Revert "PowerManagerService: Implement setButtonBrightnessOverrideFromWindowManager method"

This reverts commit 007eb9916123764ea94248964c521a3c97b5de4d.
Revert "power: Add CPU boosting interface"

This reverts commit 4992d83c9b80bcf751f015f0e7a6ea29b75f7e56.
Revert "Add PowerManager integration for button and keyboard backlight."

This reverts commit 80b447b1f01a78927245aee22766f495df64c348.