diff --git a/rainbow-delimiters.el b/rainbow-delimiters.el
index 66f1eda..4d7ba13 100644
--- a/rainbow-delimiters.el
+++ b/rainbow-delimiters.el
@@ -100,18 +100,6 @@
                    "http://www.emacswiki.org/emacs/RainbowDelimiters")
   :group 'applications)
 
-(defcustom rainbow-delimiters-ignore-modes
-  '(special-mode eshell-mode completion-list-mode
-    ;; Special RefTeX modes
-    reftex-toc-mode reftex-select-label-mode reftex-select-bib-mode)
-  "List of modes in which `rainbow-delimiters-mode' should not be automatically enabled.
-
-If the mode of a buffer is derived from one of these modes, then
-`global-rainbow-delimiters-mode' will not enable `rainbow-delimiters-mode' in that buffer."
-  :tag "Ignore in this modes"
-  :type '(list symbol)
-  :group 'rainbow-delimiters)
-
 (defgroup rainbow-delimiters-faces nil
   "Faces for successively nested pairs of delimiters.
 
@@ -584,26 +572,5 @@ Used by font-lock for dynamic highlighting."
   "Disable `rainbow-delimiters-mode'."
   (rainbow-delimiters-mode 0))
 
-;;;###autoload
-(define-globalized-minor-mode global-rainbow-delimiters-mode
-  rainbow-delimiters-mode rainbow-delimiters-mode-enable-maybe)
-(make-obsolete
- 'global-rainbow-delimiters-mode
- "
-It's a bad idea that breaks some major modes.
-Instead, use `add-hook' to add `rainbow-delimiters-mode' to the hooks of the
-major modes you actually want to use `rainbow-delimiters' in."
- "1.3.12")
-
-(defun rainbow-delimiters-mode-enable-maybe ()
-  "Enable `rainbow-delimiters-mode' if appropriate in this buffer."
-  (message "Warning: `global-rainbow-delimiters-mode' is an obsolete function.
-It's a bad idea that breaks some major modes.
-Instead, use `add-hook' to add `rainbow-delimiters-mode' to the hooks
-of the major modes you actually want to use `rainbow-delimiters' in.")
-  (unless (apply 'derived-mode-p rainbow-delimiters-ignore-modes)
-    (rainbow-delimiters-mode-enable)))
-
-
 (provide 'rainbow-delimiters)
 ;;; rainbow-delimiters.el ends here