Thanks the link worked, for anyone else joining this is what you do.
Thanks again Barry
You can stop using a Bluetooth accessory by either turning off the accessory, or turning off Bluetooth on iPad.
Unpairing a Bluetooth accessory
If you've paired iPad with an accessory that you no longer wish to use, you can unpair the accessory.
From the Home screen choose Settings > Bluetooth2. If Bluetooth isn't on, turn it on.
Choose the accessory and tap Forget this Device.