Merge "Remove stale TODOs about audio HALs" am: 1d926594bd am: b03f1398d5 am: 33820212e4

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1582549

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I5a9000b7430b7dbef633827d7286d7876a313214