Merge "Revert "Customize StubVolume implementation for ARC"" am: 5558a72d03 am: 4e8b1631b6

Original change: https://android-review.googlesource.com/c/platform/system/vold/+/1553535

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I33017ec3e299ee6f9d4e3e7885942352b9db3482