Navigate to Cloud Printing
To get started with setting up a cloud printing host, you'll need to click on Printers in the top right corner of either your Cashier or Back Office page.
The new window has a few tabs along the top. Select Cloud Printing.
Find the cloud printing host you would like to remove click Remove. You will then be able to reuse the host name and should see an alert in the top right confirming the host's removal.