bug#39631: Mention how to remove entire keymaps in Your Init File

["積丹尼 Dan Jacobson" <jidanni@jidanni.org>]

There are insufficient instructions and examples in

Info 49.3.6 Rebinding Keys in Your Init File

as of emacs-version "26.3"

to allow the user to get rid of e.g., (seen with C-h b)
C-,		flyspell-goto-next-error
C-.		flyspell-auto-correct-word
C-;		flyspell-auto-correct-previous-word
C-c $		flyspell-correct-word-before-point

Leaving only
C-M-i		flyspell-auto-correct-word

The user tries everything
(eval-after-load "flyspell-mode"
  '(add-hook
    'flyspell-mode-hook
    (lambda ()
      (setq flyspell-mode-map nil)
      ;;too close to C-/ (undo) and already on ESC TAB:
      ;;(define-key flyspell-mode-map [(control ?\.)] [])
      (define-key flyspell-mode-map (kbd "C-,") (lambda () (interactive))) #<---last time what I was told to try
      (define-key flyspell-mode-map (kbd "C-.") (lambda () (interactive)))
      (define-key flyspell-mode-map [(control ?\,)] (lambda () (interactive)))
      (define-key flyspell-mode-map [(control ?\.)] (lambda () (interactive)))
      (define-key flyspell-mode-map [(control ?\;)] (lambda () (interactive)))
      (global-unset-key [(control ?\,)])
      (global-unset-key [(control ?\.)])
      (global-unset-key [(control ?\;)])
      (setq flyspell-mode-map nil)
      )))
(global-unset-key [(control ?\,)])
(global-unset-key [(control ?\.)])
(global-unset-key [(control ?\;)])
(defvar flyspell-mode-map "")
(add-hook 'flyspell-mode-hook
	  (lambda ()
	    (define-key flyspell-mode-map (kbd "C-M-i")
                    'flyspell-auto-correct-word)))
(setq flyspell-mode-map nil)
(global-set-key (kbd "C-M-i") 'flyspell-auto-correct-word)

Alas nothing will give the user the aforementioned desired result.
Please put examples in
Info 49.3.6 Rebinding Keys in Your Init File
showing how to remove entire keymaps with one line,
and then how to sparsely populate them back. Thanks.