Major Description
ActiveMQ can automatically unsubscribe durable subscribers that are not active for some period of time http://activemq.apache.org/manage-durable-subscribers.html.
It however, doesn't remove inactive subscriptions created before it is restarted.
Steps to reproduce:
1) Configure ActiveMQ to remove inactive durable subscriptions
2) Create a durable subscription
3) Restart broker
the inactive durable subscription is never removed