Stop gerrit notification to neutron-stadium specific channels

openstack-fwaas, openstack-vpnaas and networking-sfc IRC channels
are less active and have a smaller number of subscribers.
All notifications are now sent to openstack-neutron channel.

This is based on the openstack-discuss thread.
http://lists.openstack.org/pipermail/openstack-discuss/2019-September/thread.html#9395

Change-Id: I3dfe7ac8c84ddd70b7b10b0ea2c5a30de0b81d94

gerritbot/channels.yaml

@@ -114,15 +114,6 @@ murano:
   branches:
     - master
 
-networking-sfc:
-  events:
-    - patchset-created
-    - change-merged
-  projects:
-    - openstack/networking-sfc
-  branches:
-    - master
-
 opendev:
   events:
     - patchset-created
@@ -665,16 +656,6 @@ openstack-functions:
   branches:
     - master
 
-openstack-fwaas:
-  events:
-    - patchset-created
-    - change-merged
-  projects:
-    - openstack/neutron-fwaas
-    - openstack/neutron-fwaas-dashboard
-  branches:
-    - master
-
 openstack-gbp:
   events:
     - patchset-created
@@ -1494,11 +1475,13 @@ openstack-neutron:
     - openstack/neutron
     - openstack/neutron-dynamic-routing
     - openstack/neutron-fwaas
+    - openstack/neutron-fwaas-dashboard
     - openstack/neutron-interconnection
     - openstack/neutron-lib
     - openstack/neutron-specs
     - openstack/neutron-tempest-plugin
     - openstack/neutron-vpnaas
+    - openstack/neutron-vpnaas-dashboard
     - openstack/os-ken
     - openstack/os-vif
     - openstack/ovsdbapp
@@ -2064,16 +2047,6 @@ openstack-vitrage:
   branches:
     - master
 
-openstack-vpnaas:
-  events:
-    - patchset-created
-    - change-merged
-  projects:
-    - openstack/neutron-vpnaas
-    - openstack/neutron-vpnaas-dashboard
-  branches:
-    - master
-
 openstack-watcher:
   events:
     - patchset-created