diff --git a/emacs.el b/emacs.el
index d186e12..e5f0864 100644
--- a/emacs.el
+++ b/emacs.el
@@ -1895,36 +1895,4 @@ This mode is a simplified version of `adoc-mode'."
     :global nil
     :lighter "ATranslate"))
 
-(define-derived-mode editorconfig-conf-mode conf-mode "EditorConfig"
-  "Major mode for editing .editorconfig files."
-  ;; TODO: highlight for : separated assgnment
-  (setq conf-assignment-regexp ".+?\\([ \t]*[=:][ \t]*\\)")
-  (conf-mode-initialize
-   "#"
-   `(
-     ("^#.*\\|^;.*\\| #.*\\| ;.*" 0 font-lock-comment-face)
-     ("^[ \t]*\\(root\\)[ \t]*[=:]" 1 font-lock-builtin-face)
-     ("^[ \t]*\\(indent_style\\)[ \t]*[=:]" 1 font-lock-builtin-face)
-     ("^[ \t]*\\(indent_size\\)[ \t]*[=:]" 1 font-lock-builtin-face)
-     ("^[ \t]*\\(tab_width\\)[ \t]*[=:]" 1 font-lock-builtin-face)
-     ("^[ \t]*\\(end_of_line\\)[ \t]*[=:]" 1 font-lock-builtin-face)
-     ("^[ \t]*\\(charset\\)[ \t]*[=:]" 1 font-lock-builtin-face)
-     ("^[ \t]*\\(trim_trailing_whitespace\\)[ \t]*[=:]" 1 font-lock-builtin-face)
-     ("^[ \t]*\\(insert_final_newline\\)[ \t]*[=:]" 1 font-lock-builtin-face)
-     ("^[ \t]*\\(max_line_length\\)[ \t]*[=:]" 1 font-lock-builtin-face)
-
-     ("[=:][ \t]*\\(true\\)\\([ \t]\\|$\\)" 1 font-lock-constant-face)
-     ("[=:][ \t]*\\(false\\)\\([ \t]\\|$\\)" 1 font-lock-constant-face)
-     ("[=:][ \t]*\\(lf\\)\\([ \t]\\|$\\)" 1 font-lock-constant-face)
-     ("[=:][ \t]*\\(cr\\)\\([ \t]\\|$\\)" 1 font-lock-constant-face)
-     ("[=:][ \t]*\\(crlf\\)\\([ \t]\\|$\\)" 1 font-lock-constant-face)
-     ("[=:][ \t]*\\(space\\)\\([ \t]\\|$\\)" 1 font-lock-constant-face)
-     ("[=:][ \t]*\\(tab\\)\\([ \t]\\|$\\)" 1 font-lock-constant-face)
-
-     ("^[ \t]*\\[\\(.+?\\)\\]" 1 'font-lock-type-face)
-     ,@conf-font-lock-keywords)))
-
-(add-to-list 'auto-mode-alist
-             '("/\\.editorconfig\\'" . editorconfig-conf-mode))
-
 ;;; emacs.el ends here