Remove duplicate section from changelog

git-svn-id: http://www.varnish-cache.org/svn/branches/2.1@5430 d4fa192b-c00b-0410-8231-f00ffab90ce4

doc/changes-2.1.3-2.1.4.xml

@@ -89,12 +89,6 @@
       backend should receive a given request.</para>
     </change>
 
-    <change type="enh">
-      <para>The client director now has a variable
-      <code>client.identity</code> which is used to choose which
-      backend should receive a given request.</para>
-    </change>
-
     <change type="enh">
       <para>The Solaris <code>port</code> waiter has been updated, and
       other portability fixes for Solaris.</para>