Commit 3838010a added code that was subsequently made redundant
by commit 668a2898 but never removed. This patch cleans things
up.
Change-Id: I59fcea6f5bb19e0bc57856600a85a18419cf8730
'alarm-listener' in Aodh would be deployed if you use charm-aodh.
It expects that ceilometer publish events with 'alarm.all' topic,
then it can evaluate alarm criteria pre-configured by users.
This patch makes ceilometer publish events for event-driven alarm
evaluation in Aodh.
Change-Id: Id536c9d847ac9c08b9d7d309b4639606e6860a17