Move nov.el config out of #emacs root config

emacs/.config/doom/config.el

@@ -180,5 +180,3 @@
   (if (derived-mode-p 'mpdel-playlist-current-playlist-mode)
       (libmpdel-play-song (navigel-entity-at-point))
     (mpdel-core-insert-current-playlist)))
-
-(add-to-list 'auto-mode-alist '("\\.epub\\'" . nov-mode))