How about if your Apple TV is lost in a move
How to disable or eliminate my ID from stolen Apple TV
Apple TV HD, tvOS 10
Question marked as
Log into https://appleid.apple.com/account/manage
Then in the Devices section click on your device.
To remove a device, click on the Device name and then click Remove from account.
Or go to Settings > [username] > [device name] on an iPhone or iPad.
Or go to Apple menu > System Settings > [username] > [device name] on Mac.