Revert "Notify display brightness changed due to brightness transforms"

This reverts commit b7c40451f4e0660571f2b2cead76c49282b2194d.

Reason for revert: b/214849040

(cherry picked from commit a36606b5ee6588e01faaedc925b4edcd3b022094)
(cherry picked from commit d817f84a4ef6aea1a76e939b322b21572f97dfdb)
Merged-In: I0a3f805a7e70784d613825db1181f654c57de15d
Change-Id: I0a3f805a7e70784d613825db1181f654c57de15d
1 file changed