remove old http backend server from __init__
remove old http backend server from __init__

lsgunth/rapidsms,ehealthafrica-ci/rapidsms,lsgunth/rapidsms,catalpainternational/rapidsms,caktus/rapidsms,ehealthafrica-ci/rapidsms,lsgunth/rapidsms,catalpainternational/rapidsms,catalpainternational/rapidsms,caktus/rapidsms,peterayeni/rapidsms,peterayeni/rapidsms,eHealthAfrica/rapidsms,peterayeni/rapidsms,peterayeni/rapidsms,caktus/rapidsms,catalpainternational/rapidsms,ehealthafrica-ci/rapidsms,lsgunth/rapidsms,eHealthAfrica/rapidsms,eHealthAfrica/rapidsms