Removes redundant jobs from config gate and check

With the creation of the new project-config repo, some jobs
that have been running on the config repo become redundant.
Remove the redundant jobs on layout, irc and projects.yaml.

Story: 167

Change-Id: I43410b31cfad0b484842a21af84db6680e7114d1
Merge "Removes redundant jobs from config gate and check"