Merge "Remove TREBLE_TESTING_OVERRIDE." am: 332d156afa am: 8ac15324d8 am: fb0c9ce655

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/1358166

Change-Id: I835ffe213e0147b94e6e8d365ea21b77f794ef72