Remove IRC bots from #ara

The #ara channel no longer grants founder access to the
openstackinfra bot account, so we should not continue to operate our
bots in it.

Change-Id: Ic323a436bfc057a919ece48f578f6626f87ae03c
Depends-on: https://review.opendev.org/787891

accessbot/channels.yaml

@@ -108,7 +108,6 @@ channels:
     mask: full_mask
   - name: airshipit-gerritbot
     mask: full_mask
-  - name: ara
   - name: cloudkitty
   - name: congress
   - name: dox

gerritbot/channels.yaml

@@ -9,20 +9,6 @@ airshipit-gerritbot:
     - master
     - v2
 
-ara:
-  events:
-    - patchset-created
-    - change-merged
-  projects:
-    - recordsansible/ansible-role-ara
-    - recordsansible/ara
-    - recordsansible/ara-collection
-    - recordsansible/ara-infra
-    - recordsansible/ara-web
-  branches:
-    - master
-    - stable/0.x
-
 cloudkitty:
   events:
     - patchset-created