Revert "Fixes #74 Updated gist-edit-current-description"

This reverts commit 9baace6.
This fixes #101

Author: sigma

gist.el

@@ -472,6 +472,7 @@ for the gist."
     (let* ((old-descr (oref gist :description))
            (new-descr (read-from-minibuffer "Description: " old-descr))
            (g (clone gist
+                     :files nil
                      :description new-descr))
            (resp (gh-gist-edit api g)))
       (gh-url-add-response-callback resp