Ok, thanks. I thought that it would stop detect them. ThanksIt is! If you view your SD card on your computer (either with an SD card reader or with WiFi), then you can go into the "bankManager" folder on the root of your SD card, and you'll see your bank files (named "bank1", "bank2", "bank3", etc.). These files can be renamed to what you want your bank to be called.
This can also be done with a file manager homebrew for the 3ds.