Change gimp window icon to transparent?

I just want to see how an icon image renders in the upper left of the Gimp window, but the Gimp logo blocks it. Whats the file to change the logo to transparent, so that it's only the image I created? Im thinking this can be done with Resource Hacker. Just unsure what file to edit.

Its the grey icon here that Id like transparent.

Thanks! =)

I asked Microsoft's AI. Apparently it answered the question like so:
(It's up to you if you want to try that out though. I think you're going to have to make a custom icon file though.)