The repository has been removed from swh-environment so no reference to it
should be kept in requirements as the pip-swh-packages script fails otherwise.
(swh) ✔ ~/swh/swh-environment [master|✚ 1⚑ 5] 15:38 $ pip install $(./bin/pip-swh-packages --with-testing) ERROR: swh-mirror-forge[testing] is not a valid editable requirement. It should either be a path to a local project or a VCS URL (beginning with svn+, git+, hg+, or bzr+).