Merge "Clean up prebuilt stub deps & add comment" into main am: e1d899f2

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2767025



Change-Id: Icb77f840a20755fa0a3245345d319c044a694ddf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>