Can't delete cheat duplicate.

[1deleeuwale]

Here's what happened; I was checking for cheats in Luigi's Mansion, but they didn't seem to work. I tried looking up the cheats and entering them manually, just in case the built-in ones didn't function. Then I realized that I just needed to enable cheats. But now I have two of the same Infinite Health cheat and I can't delete one because it's the same as the built-in one. It doesn't affect the game, it just really bothers me.