remove duplicate email backend
remove duplicate email backend
smellman/sotmjp-website,PyCon/pycon,smellman/sotmjp-website,njl/pycon,smellman/sotmjp-website,njl/pycon,smellman/sotmjp-website,pyconjp/pyconjp-website,pyconjp/pyconjp-website,pyconjp/pyconjp-website,Diwahars/pycon,osmfj/sotmjp-website,eldarion/pycon,osmfj/sotmjp-website,eldarion/pycon,osmfj/sotmjp-website,njl/pycon,Diwahars/pycon,PyCon/pycon,njl/pycon,Diwahars/pycon,PyCon/pycon,osmfj/sotmjp-website,eldarion/pycon,PyCon/pycon,pyconjp/pyconjp-website,Diwahars/pycon