Revert "improves find-user-init-file"

This reverts commit c8b3e46ef8.

This change had negative side effects and
was therefore reverted. Please see #13933
for details.

layers/+spacemacs/spacemacs-defaults/funcs.el

@@ -729,11 +729,12 @@ variable."
 
 
 
+;; adapted from bozhidar
+;; http://emacsredux.com/blog/2013/05/18/instant-access-to-init-dot-el/
 (defun spacemacs/find-user-init-file ()
   "Edit the `user-init-file', in the current window."
   (interactive)
-  (find-file-existing
-   (expand-file-name "init.el" user-emacs-directory)))
+  (find-file-existing user-init-file))
 
 (defun spacemacs/find-dotfile ()
   "Edit the `dotfile', in the current window."