[opensuse-buildservice] undo Repotype settings

What is the correct way to undo the "splitdebug" setting in a project which uses Backports as a base? # obs meta prjconf openSUSE:Backports:SLE-12-SP2 RepoType: rpm-md:rsyncable splitdebug:_debug All the packages are supposed to appear in a single download repository. Olaf