Remove clean up jobs

We aren't using them anymore and we don't have pipelines in https://github.com/metal3-io/project-infra/tree/master/jenkins/jobs to run these tasks.
This is cleaning up the code from clean-up jobs.

Change-Id: Id843479d76d620d6cd50cdf3411887b2bd42bc7a
3 files changed
tree: 757167bf34066a76c731feed396490782a78c7c9
  1. jjb/
  2. .gitignore
  3. .gitreview
  4. .yamllint
  5. tox.ini