Fix duplicated section

git-svn-id: http://www.varnish-cache.org/svn/branches/2.1@5447 d4fa192b-c00b-0410-8231-f00ffab90ce4

doc/changes-2.1.3-2.1.4.xml

@@ -57,14 +57,6 @@
       when a backend connection is closed.</para>
     </change>
 
-    <change type="bug" ref="733">
-      <para>In a high traffic environment, we would sometimes reuse a
-      file descriptor before flushing the logs from a worker thread to
-      the shared log buffer.  This would cause confusion in some of
-      the tools.  This has been fixed by explicitly flushing the log
-      when a backend connection is closed.</para>
-    </change>
-
     <change type="bug" ref="744">
       <para>If the communication between the management and the child
       process gets out of sync, we have no way to recover.