Remove zuul-jobs notification from #openstack-infra

Most folks on #openstack-infra are on #opendev as well, don't duplicate
notifications for zuul/zuul-jobs repository.

Change-Id: I9352b7c917c43bf9838069491f40d0a32f260e1e

gerritbot/channels.yaml

@@ -772,7 +772,6 @@ openstack-infra:
     - openstack/ptgbot
     - openstack/reviewday
     - openstack/reviewstats
-    - zuul/zuul-jobs
   branches:
     - ^.*