Merge "libprocessgroup: Don't sleep after last cgroup removal attempt" into...

Merge "libprocessgroup: Don't sleep after last cgroup removal attempt" into main am: af5de390 am: 5a374dca

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2777582



Change-Id: Ie8114bb7251e46d6373fcb3098f0a40d77d6f184
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>