diff --git a/emacs.el b/emacs.el
index 2633046..bd73a17 100644
--- a/emacs.el
+++ b/emacs.el
@@ -88,51 +88,6 @@ found, otherwise returns nil."
         (message "Tetris loaded!"))
   (message "Tetris found!"))
 
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; download library from web
-
-(defun download-file (url path &optional ok-if-already-exists)
-  "Download file from URL and output to PATH.
-IF OK-IF-ALREADY-EXISTS is true force download."
-  (let ((curl (executable-find "curl"))
-        (wget (executable-find "wget")))
-    (cond (wget
-           (if (and (not ok-if-already-exists)
-                    (file-exists-p path))
-               nil
-             (and (eq 0
-                      (call-process wget
-                                    nil
-                                    nil
-                                    nil
-                                    "-O"
-                                    path
-                                    url
-                                    ))
-                  path)))
-          (curl
-           (if (and (not ok-if-already-exists)
-                    (file-exists-p path))
-               nil
-             (and (eq 0
-                      (call-process curl
-                                    nil
-                                    nil
-                                    nil
-                                    "--output"
-                                    path
-                                    "-L"
-                                    url
-                                    ))
-                  path)))
-          (t
-           (ignore-errors
-             (require 'url)
-             (url-copy-file url
-                            path
-                            ok-if-already-exists)
-             path)))))
-
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; package