Merge "libutils -= libprocessgroup dep" am: a0542fb15f am: 55975b7e0a am: 16149a30a3 am: caa74a6549

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1975707

Change-Id: I88506b52d099fdd120aec12dc517bd8e22b95f2e