Merge "Remove system/core/METADATA" into main am: e400d09c83

Original change: https://android-review.googlesource.com/c/platform/system/core/+/3368403

Change-Id: Ia1faf480ab1976f676f36915a7be385815c055d4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>