Hmm... can't remember why it depends on the CC module, but you can simply go there and specify your files directory. It will write to it a .key file that just won't be used, though you can still add it to your exclusions list in your .htaccess if you want. I'll review the code to see why it specifies CC as a dependency. It's probably b/c the module was going to combine HOP with Silent Order POST (or Simple Order API... whatever they call it. I've done too many of these. )