how to forget a TV from my iPhone AirPlay screen mirror settings, it's easy to accidentally stream to the wrong TV...

So I paired with it recently to show someone living in my house how to use it.

But now I can accidentally stream to their TV and not my own and it's a pain to be honest.

So I just wish to delete one of them from my phone's memory or account so it's no longer paired, thanks?

You know when you tap screen mirror on the iPhone control centre it shows devices available, in the past it would not allow me to stream to one of them because I had not put in the 4 digit code, now if I accidentally tap the wrong TV which is easy enough to do, it will stream to that TV.

If that makes sense?