Cleanup annontations for Hearing Aids Profile API

Remove the @UnsupportedAppUsage and add the @IntDef for the Profile
Connection States in the Hearing Aids Profile API. Also, the parent
class BluetoothProfile has its Profile Connection States annontated.

Bug: 128523382
Test: Compile only
Change-Id: Ibd02516fa637ddb48d70a8dfacf607f047aec282
2 files changed