Remove file Android.mk. am: b25f9764fe am: 70140f53e6

Original change: https://android-review.googlesource.com/c/device/generic/uml/+/3043052

Change-Id: Ib348170d0c4d9725b9b80f458b527b98a4a1f943
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>