cleanup: Remove expired ports:

2022-06-30 www/py-django22: Django 2.2 is now in Extended Support, receives security fixes only and will reach End-Of-Life on 2022-04-01. Upgrade to a later Django version. See https://www.djangoproject.com/download/
2022-06-30 www/py-jsonfield2: Obsolete, please use www/py-jsonfield instead