How do you delete a hidden file like drvspace.bin from a floppy disk?

As far as I know, you pretty much need to be the one that hid the files in the first place, and you'd need to use whatever program you used to hide them, to locate them again. If you were the one that hid the files, access the program you used, and check the 'help' menu for an explanation of how to locate a hidden file, or check the software manufacturer's website to see if there is a FAQ section, message board, or forum of some sort.