I thought I had to refile and started the process (selected "Refile" in the online version) but now realize I do not need to refile. How do I delete the refile return?

You can delete this file. The normal process when you start ReFILE is, it replace the original return with the one with the changes.

Did you create a copy of your original return before starting ReFile? If not, we suggest you to leave it like this or you will lose your return for next year.

Thank you for choosing TurboTax.