Revert "Hearing Aid State Machine without native interface"

This reverts commit 3e1b61a6.

Reason for revert: Service shutdown not working
Bug: 74511352
Bug: 69623109
Test: Manual
Change-Id: I0a1a4d98104b7d7c0dac85464236b61cbb5a44a8

(cherry picked from commit 59d340a991edea214c63a3e657255e6cad572583)