'Allow Calls on Other Devices' - Remove Device
I have an iPhone 6 and tried out an Apple Watch for a few weeks which I returned. Now however, under Settings > Phone > Calls I have an option called 'Allow Calls on Other Devices' where my former Apple Watch is listed as a device.
I've turned it off, but as I no longer have the Apple Watch, is there any way to remove the device from my phone? I even tried setting up my iPhone as new device and it is still there. I assume it is tied to my iCloud account somehow - but the question is, how do I remove it?!?!
Thanks!
iPhone 6, iOS 9.1