Do not delete the SQL dump too early
The change in baa157926d432f404a41c31ad6514ff8d5366269 broke backup restore fucnctionality. This would not lead to data loss, but it prevented the restore script from working. This bug exists only in 7.14.0 release candidate versions, not in 7.13. Reported in https://github.com/gitlabhq/gitlabhq/issues/9571 .