In your my ebay, go to All Selling,
to the right of one of the items click More Actions, and select end item from the menu
You can use this form to end,OR revise to selling something in its place
Click on My Ebay and select 'Selling'
Find the item that you want to end.
On the right of the page under My eBay Sell Similar,
Click on 'More Action'
4th down - end item