Trade-in device showing up on list of devices

I traded in the XG1v3 for the XG1v4 yesterday, but the XG1v3 I traded in is still showing up on the list of devices under My Account > TV. It's listed with the default name 'Set-top Box' and the status is 'unavailable'. Will the XG1v3 go away on its own?

I just wanted to make sure if this is something to be concerned about, so that I'm not charged extra for having another box on my account.