This repository was retired by solum team in 2016, remove it now from
OpenDev.
Depends-On: https://review.opendev.org/737987
Change-Id: I1cb0652031144ddecafe072d3683dea49298dd9c
Replace URLs for workflow documentation to appropriate parts of the
OpenStack Project Infrastructure Manual.
Change-Id: I50243208ee0ac4e20dad72dc170be86a592a8a4e