In the 2.0.7.610 version that I am currently using, I can't remove any keyboard shortcuts. The Remove button stays greyed out when I select one of the Current Shortcuts of a Command.
I tried to set the Edit.Commands Line command to '/' (slash), like PHPEdit 2.8.0 where you can select code and comment it out by pressing /. Now I cannot unset the shortcut and the slash key doesn't work anymore in PN2 (doesn't print a /).
Am I doing something wrong or should I report this as a bug on SF?
Too bad I can't edit keymap.dat manually...