Merge "Add bta::sys::bta_sys_eir_unregister" am: cc5e1159 am: 8e48a7e1 am: e371aadf

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2366495



Change-Id: I5777f9528747a72c95f194fa70f6add22a204786
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>