DO NOT MERGE: SF tests - completely remove ChildLayerTest am: fa09757aa9 am: a56e532744

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2254260

Change-Id: I05e757bed1548a547393f3f5e77bfee6776479aa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>