Remove middleware component, since we're not using it anymore.
Remove middleware component, since we're not using it anymore.

SheepDogInc/django-openid-auth,edx/django-openid-auth,edx/django-openid-auth,kdazzle/MySQL-safe-django-openid-auth,leepa/django-openid-auth,shenek/django-mojeid-auth,shenek/django-mojeid-auth,jplana/django-openid-auth