Remove Facebook Login Product from dashboard

I'm working on a Facebook canvas app, and I made a test app. Somehow, I accidentally added the "Facebook login" product to the test app, but I don't want it. Is there a way to remove the "Facebook login" product from the app?

How do I remove Facebook login from other Apps?

Tap in the top right of Facebook. Scroll down and tap Settings. Go to the Security section and tap Apps and Websites. Tap Edit next to Apps, Websites and Games, then tap Turn Off.

I'm accepting CBroe's answer above that this can't be done, as there doesn't seem to be any way to do it through the FB Dashboard and FB's developer support is virtually non-existent. Because it's a test app, it's not hard to just make a new test app, which is what I think I'll do.