In order to unschedule your auction, first click the "Pending" link in the lefthand navigation bar. On the next page, select the listing you want to unschedule and click the "Cancel" button at the top of the list.
If you would like to reschedule and edit the listing, select the item again by clicking the check-boxe next to it, and then click the "Resubmit" button. On the next page, you will have the option to edit, launch immediately or reschedule the auctions to launch at a later time.
There is no general list of recurring listings, they are all in pending with a date countdown on them so you know when it's closer to being resubmitted.
