SpatializerHelper: Remove custom sensor handling

Created for sc-v2 dev use, no longer needed in T.
Use Sensor.TYPE_HEAD_TRACKER instead.

Also, prefer to match head tracker to audio device uuid.

Test: head tracking BT buds works fine
Bug: 231977974
Bug: 232131275
Change-Id: Icef3ec27a513e31e5f49c1e8adf72d375232dd5f
1 file changed