This reverts commit 002e656a51.
Reason for revert: Setting brightness using adb (adb shell settings put system screen_brightness ...) results in different brightness being set by DisplayPowerController each time.
Bug: 194791517
Test: atest HighBrightnessModeControllerTest
Test: manually test `settings put system screen_brightness 23` yields
consistent results
Change-Id: I6b49253b46e4d09a1f4129d3df950c9d36eb6ede