Take out unnecessary self.type assignment in IRC backend.
Take out unnecessary self.type assignment in IRC backend.

dimagi/rapidsms,ken-muturi/rapidsms,dimagi/rapidsms-core-dev,caktus/rapidsms,peterayeni/rapidsms,lsgunth/rapidsms,peterayeni/rapidsms,dimagi/rapidsms,catalpainternational/rapidsms,unicefuganda/edtrac,dimagi/rapidsms-core-dev,catalpainternational/rapidsms,eHealthAfrica/rapidsms,peterayeni/rapidsms,eHealthAfrica/rapidsms,lsgunth/rapidsms,caktus/rapidsms,ken-muturi/rapidsms,rapidsms/rapidsms-core-dev,eHealthAfrica/rapidsms,catalpainternational/rapidsms,unicefuganda/edtrac,lsgunth/rapidsms,catalpainternational/rapidsms,unicefuganda/edtrac,rapidsms/rapidsms-core-dev,peterayeni/rapidsms,caktus/rapidsms,ehealthafrica-ci/rapidsms,ehealthafrica-ci/rapidsms,ken-muturi/rapidsms,ehealthafrica-ci/rapidsms,lsgunth/rapidsms