[automerger skipped] Merge "Removed unused mount mode constants" into rvc-qpr-dev-plus-aosp am: d41a537e -s ours

am skip reason: Change-Id I62b66083f2099b429474872b6f9c7cffb9fb906d with SHA-1 c8fe3d2a is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13699985

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I56c5f7b73e1e822dd3ddb74f76186324c939c252