remove duplicate field in serializer
remove duplicate field in serializer

jfterpstra/bluebottle,onepercentclub/bluebottle,onepercentclub/bluebottle,onepercentclub/bluebottle,onepercentclub/bluebottle,onepercentclub/bluebottle,jfterpstra/bluebottle,jfterpstra/bluebottle,jfterpstra/bluebottle