What is/does this script in my code?

Hi,

I´m optimizing my site and discovered this line of code:

<script id="formidable-js-after">window.frm_js.repeaterRowDeleteConfirmation = "Are you sure you want to delete this row?";</script>

I know it is not a heavy thing and probably does nothing to my performance, but I´m curious about it, because I do not use a repeater.

Thanks for clarification

Best – Mikkel