Remove gitaly_migrate blocks and replace by early return
Remove gitaly_migrate blocks and replace by early return

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