wxGUI/modeler: comment-out broken link to user-defined models (merge https://trac.osgeo.org/grass/changeset/67955 from trunk)

git-svn-id: https://svn.osgeo.org/grass/grass/branches/releasebranch_7_0@67957 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/gmodeler/g.gui.gmodeler.html

@@ -260,9 +260,11 @@ Slovakia precipitation dataset</a> and administration boudaries of Slovakia from
   <a href="wxGUI.components.html">wxGUI components</a>
 </em>
 
+<!--
 <p>
 User-defined models available
 from <a href="http://svn.osgeo.org/grass/grass-addons/wxgui_modeler">SVN</a>.
+-->
 
 <p>
 See also