Merge "Remove stale TODOs about audio HALs" am: 1d926594bd am: b03f1398d5 am: 33820212e4 am: 543cc64e29

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ib35b3e4efe4d961007089e14509d47df1ed421fa