They are store in a OS 10 resource and not as separate files. I don't have a mac in front of me. However, locate where the driver package is installed. The tip about where LR finds them with give you the path on the file system. Once you find the path, you right click and "Show Package Content". In there you will find sub folders and the actual profiles.
If you cant accomplish this, let me know and when I get to a mac I can be more precise.