Within your Queues settings you'll be able to view, edit and delete any Queues that have been created within your system (permission dependant).
Here you will be able to see all of your active Queues, which ones are Inactive (these can be Queues which aren't in use currently however will be used in the future so you can click into any of these to continue the building of them at any time.
You can also use the quick link to View any Queues within your list.
From here you will also be able to edit the Queue or Delete it completely.