What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
If you are referring to the Auto Delete Submissions App, you can remove it form your account under 'API > Authorized Apps' like any other JotForm Apps.
You can also remove only a specific form from Auto Delete Submissions App if you want too by login to your account and go to App page : http://auto-delete.jotform.io/dashboard
Hope that solves the issue.