How can I delete someone from receiving Jot Form?

If you are trying to change the email address a form is sent to, here is how to do so:

https://www.jotform.com/help/314-How-to-Properly-Add-Change-and-Test-a-New-Email-Recipient-Address

If there is something else you are looking for, let us know a bit more detail and we will be happy to help.