How to disable keybinding (`C-o`) in ido-find-file?

Question

I want to disable key-binding C-o on ido-find-file. If I press it generates ^J and completion does not completed so I want to disable it.
I have tried following but it did not work.
(defun ido-common-completion-map ()
  "Add my keybindings for Ido."
  (define-key ido-common-completion-map (kbd "C-o") 'nil))

(add-hook 'ido-setup-hook #'ido-common-completion-map)

I have followed for ido-wiki  and https://emacs.stackexchange.com/a/3730/18414

(defun ido-disable-line-truncation ()
  (set (make-local-variable 'truncate-lines) nil))
(add-hook 'ido-minibuffer-setup-hook #'ido-disable-line-truncation)
(defun ido-define-keys () ;; C-n/p is more intuitive in vertical layout
  (define-key ido-completion-map (kbd "C-n") 'ido-next-match)
  (define-key ido-completion-map (kbd "C-p") 'ido-prev-match))
(add-hook 'ido-setup-hook 'ido-define-keys)

itirazimvar · Answer

Please follow same approach which I mention in https://emacs.stackexchange.com/a/55607/8426
call    helpful-function ido-find-file
It opens clickable bufferm In this buffer, you have to click C-o than you will learn which key-map that you are interacting.
Next screen after click will tell you which in which map that you have to change.
Big possible answer is for you(This keybinding somehow was not defined in my emacs I am not sure):
(define-key ido-buffer-completion-map (kbd "C-o") nil)
(define-key ido-file-completion-map (kbd "C-o") nil)

db48x · Answer

That key is defined on ido-file-completion-map.

How to disable keybinding (`C-o`) in ido-find-file?

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