Cruft removal.

* subversion/libsvn_ra_serf/replay.c
  (replay_context_t): Lose not-really-used 'report_target' member.
  (svn_ra_serf__replay, svn_re_serf__replay_range): Stop messing with
    the now-removed structure member.

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1432264 13f79535-47bb-0310-9956-ffa450edef68