Remove refs cleanup job
Remove refs cleanup job

Introduced by f20eadcbbeb88e98c2608cbaf23f0d09ca002a98, meant to remove
refs from Git using the wrong name. That never made it to a non-rc
release and can be safely removed now.

dreampet/gitlab,axilleas/gitlabhq,iiet/iiet-git,jirutka/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git,stoplightio/gitlabhq,jirutka/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,dreampet/gitlab,jirutka/gitlabhq,iiet/iiet-git,axilleas/gitlabhq,dreampet/gitlab,jirutka/gitlabhq,axilleas/gitlabhq,mmkassem/gitlabhq,dreampet/gitlab,stoplightio/gitlabhq,axilleas/gitlabhq