Remove vendor CI YML instructions from release-candidates.md
This is has been moved into the gitlab-ce
repo and is longer vendored per https://gitlab.com/gitlab-org/gitlab-ce/issues/50289 .
/cc @jprovaznik
This is has been moved into the gitlab-ce
repo and is longer vendored per https://gitlab.com/gitlab-org/gitlab-ce/issues/50289 .
/cc @jprovaznik