We should remove obsolete neutrino flavor transformation classes in ASTERIA and let [snewpy](https://github.com/snews2/snewpy) handle all transformations. Resulting changes include: - [x] Removal of the `matter.py` module. - [x] Removal of the `oscillations.py` module. - [x] Closeout of tickets #54, #64, and #66 as "wontfix."
We should remove obsolete neutrino flavor transformation classes in ASTERIA and let snewpy handle all transformations. Resulting changes include:
matter.pymodule.oscillations.pymodule.