[automerger skipped] Merge "Removed unused mount mode constants" am: 14f35d5f2d am: b68c51d4c4 -s ours am: 9ca2676072 -s ours

am skip reason: Change-Id I62b66083f2099b429474872b6f9c7cffb9fb906d with SHA-1 6d5527d540 is in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1605513

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ib32410a7b7f0b95cf3db3ec9c8dcff4373be3199