Merge "Remove unused files." into main am: 59a2cde894 am: 1a262a11d4 am: e2145d2fbb am: 510fd0f2b5

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2759693

Change-Id: Idbca54dab7db182d2f4f9f5c422fd0c4070ce61b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>