- Removed corresponding playback examples in the resouce JSON files.
- Removed the spherical style declaration.
- Removed spherical stereo mode related Intent settings, and
- Removed code to play back media in spherical stereo mode
BUG=160460714
(grafted from 595fe17a480d5bc64d0198130150d8e8a5daa679)
PiperOrigin-RevId: 322206314
