Merge "libsnapshot: Remove various unused components." am: 2812fd841e am: 86813c34a1

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2536015

Change-Id: I9e9c0432a0c2b9d831a94350df92504790ac6416
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>