cleanup: Remove expired ports:

2022-06-30 www/py-django-common-helpers: No longer maintained, doesn't work with newer versions of Django
2022-06-30 www/py-django: Was used as a metaport, no longer required
2022-06-30 www/py-django-sudo: Abandoned upstream, not compatible with newer versions of Django
2022-06-30 www/py-django-bootstrap-form: No longer maintained, not compatible with newer versions of Django
2022-06-30 www/py-django-babel: Upstream no longer maintained, please use www/py-enmerkar instead
2022-06-30 www/py-django-bulk-update: No longer maintained, not compatible with newer versions of Django
2022-06-30 www/py-django-happenings-update: Upstream no longer maintained, not compatible with newer versions of Django
2022-06-30 www/py-django-compat: No longer maintained, doesn't work with newer versions of Django
2022-06-30 www/py-django-modern-rpc: Not compatible with newer versions of Django