Remove device from background list when initiating disconnect am: 44f711fa...

Remove device from background list when initiating disconnect am: 44f711fa am: fcd3742d am: c61a5fc2 am: 628a9ef3

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2117841



Change-Id: Ib67cb4ffc3add400a151ac99b98963c1bdb49d41
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>