Remove unused main::shim::link_policy code am: 729a6afb am: 7483a6ff am:...

Remove unused main::shim::link_policy code am: 729a6afb am: 7483a6ff am: b2b55d54 am: 1222c21f am: 8ea70dd1

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2129637



Change-Id: I398b1ec090bff906171430fe44169627ce928293
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>