Remove unused Android.mk under device/google/bluejay am: 34aaf50436

Original change: https://android-review.googlesource.com/c/device/google/bluejay/+/2833591

Change-Id: If934bea2fd396ce3b53484f7163392483362d434
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>