What I've done is that I wanted to slim down on the amount of bindings I had in a major mode (in this case CC-Mode). I had started with CC-Mode's c-set-offset and it did work with the solution I used (below).
(add-hook 'c-mode-hook (lambda() (local-unset-key (kbd "C-c C-o"))))Though when I checked the Help buffer, it had still showed up there. I tested this with the Major mode's other bindings (e.g., c-electric-brace, c-toggle-auto-newline) while using M-x and some got removed from the list though others didn't. Why does this happen and am I able to remove this at all?