Merge "Delete unused DATA_MNT_POINT macro" into main am: 9c562cf82b am: 5e32ce2d28 am: afc3f8e7e4

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2759565

Change-Id: I92e8065d63da898e101772b7920125560b5dd2f1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>