Comment 3 for bug 1634884

By default neutron server sends fanout on all events when resource state changes. Some are consumed by current agents (like port update, etc.), some may be consumed or not, depending on plugins/drivers/extensions/agents used in current installation. I guess with your set of drivers q-agent-notifier-network-delete is not consumed by anybody, but it doesn't mean that there is no other agents that might need this info.