These tasks are happening through housekeeping right now, by default
ever 10th push. This removes the need for these tasks.
Side note, this removes one of my first contributions to GitLab, as back
than I introduced these tasks through: 54e6c0045b
Closes https://gitlab.com/gitlab-org/gitaly/issues/768
Because no Git repository was actually created at the temporary path we
were using, `git fsck` would traverse up until it found a repository,
which in our case was the CE or EE repository.
