Merge "Remove public visibility of bluetooth impl" into tm-dev am: 742c3ea4

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/17970091



Change-Id: I800d0ff7e752ed5d0750e914523ee983429290e7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>