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

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

Change-Id: Ieffb305e67aa605a8d6a7360ccaeb9f3b1859dee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>