You can change an existing key map using define-key
. By passing nil
as the function to call, the key will become unbound. I guess that you should be able to do something like:
(define-key reftex-mode-map "C-c/" nil)
Of course, you should do this in some kind of hook, for example:
(defun my-reftex-hook ()
(define-key reftex-mode-map "C-c/" nil))
(add-hook 'reftex-mode-hook 'my-reftex-hook)
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