[Invisalign2] remove unused smp_send_init am: 25fd0f62 am: c8a0486e am: 3647cdeb

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2853553



Change-Id: I87b5cd6f601440012c8c27290f2f14329da2e6ea
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>