Merge "Remove unused Android.mk in NamespaceTest" into main am: 3cf2db8aef am: d2f3837de2

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2905929

Change-Id: I8468da51b36f79181c16f47a1b850077e9afb581
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>