Revert "Provide the current auto-brightness levels in DisplayOffloadSession"

This reverts commit 32fba93b.

Reason for revert: DroidMonitor-triggered revert due to breakage https://android-build.corp.google.com/builds/quarterdeck?branch=git_main&target=husky-trunk_staging-userdebug&lkgb=11241730&lkbb=11242061&fkbb=11241746>, bug b
/317228662

BUG: b/317228662

Change-Id: Ic793e03acd2beb54199ec4813a116df5f3aeb80f