org-odt.el: Fix handling of internal links

* lisp/org-odt.el (org-odt-format-org-link): Pay no heed to
whether the internal links destined for headlines provide a
description or not.  In fact, the `org-store-link' and
`org-insert-link' create internal links which do have a
description.

This fixes an issue where internal links terminating at an
invisible target (that is bound to a headline) was badly
rendered.  Refer following thread:
http://lists.gnu.org/archive/html/emacs-orgmode/2012-04/msg00757.html

lisp/org-odt.el

@@ -1689,7 +1689,6 @@ ATTR is a string of other attributes of the a element."
 	     (or (not thefile) (string= thefile ""))
 	     (plist-get org-lparse-opt-plist :section-numbers)
 	     (setq sec-frag fragment)
-	     (org-find-text-property-in-string 'org-no-description fragment)
 	     (or (string-match  "\\`sec\\(\\(-[0-9]+\\)+\\)" sec-frag)
 		 (and (setq sec-frag
 			    (loop for alias in org-export-target-aliases do