refactor: Remove unused test factory
refactor: Remove unused test factory

angelapper/edx-platform,angelapper/edx-platform,eduNEXT/edx-platform,arbrandes/edx-platform,arbrandes/edx-platform,edx/edx-platform,angelapper/edx-platform,eduNEXT/edx-platform,edx/edx-platform,arbrandes/edx-platform,arbrandes/edx-platform,eduNEXT/edx-platform,edx/edx-platform,angelapper/edx-platform,eduNEXT/edx-platform,edx/edx-platform