Follow-up to r27109: remove now-unused variable.
Follow-up to r27109: remove now-unused variable.

* subversion/libsvn_client/update.c
  (svn_client__update_internal): Remove ra_session2.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion