org-entities: forward declaration of org-toggle-pretty-entities and org-pretty-entities

* lisp/org-entities.el: Remove superfluous require of org-macs.
  Forward declare 'org-toggle-pretty-entities' and
  'org-pretty-entities'.

lisp/org-entities.el

@@ -27,9 +27,8 @@
 
 ;;; Code:
 
-(require 'org-macs)
-
-(declare-function org-table-align "org-table" ())
+(declare-function org-toggle-pretty-entities "org"       ())
+(declare-function org-table-align            "org-table" ())
 
 (eval-when-compile
   (require 'cl))
@@ -568,6 +567,7 @@ Kind can be any of `latex', `html', `ascii', `latin1', or `utf8'."
     (goto-char pos)
     (org-table-align)))
 
+(defvar org-pretty-entities) ;; declare defcustom from org
 (defun org-entities-help ()
   "Create a Help buffer with all available entities."
   (interactive)