Merge "Revert "libsnapshot: set thread priority"" into main am: 35bd4d8f30

Original change: https://android-review.googlesource.com/c/platform/system/core/+/3128361

Change-Id: I4109dc8c87570fdd7bbdb189fa4368ac67c632af
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>