Following up on r1378927, remove some accidentally added dead code.

* subversion/mod_dav_svn/reports/update.c
  (item_baton_t): Remove never set boolean.
  (close_helper): Remove check on always false boolean.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1556941 13f79535-47bb-0310-9956-ffa450edef68