Deny keymap changes made by `evil-integration'

[Alexander Shukaev]

Hello,

`evil-integration' has quite some forms like

(eval-after-load 'dired
  '(progn
     ;; use the standard Dired bindings as a base
     (defvar dired-mode-map)
     (evil-make-overriding-map dired-mode-map 'normal)
     (evil-add-hjkl-bindings dired-mode-map 'normal
       "J" 'dired-goto-file                   ; "j"
       "K" 'dired-do-kill-lines               ; "k"
       "r" 'dired-do-redisplay                ; "l"
       ;; ":d", ":v", ":s", ":e"
       ";" (lookup-key dired-mode-map ":"))))

for various packages.  I would like to learn how to either revert
these changes back to the default state (i.e. `dired-mode-map' should
be crystal clean as it was before loading `evil') or, even better,
prevent `evil-integration' from doing such changes.  For instance,
I've tried

(let ((dired-mode-map))
  (require 'evil)
  ...
)

and it didn't work.  Any ideas?

Thanks,
Alexander