Follow-up to r1465610:

* subversion/libsvn_wc/wc_db_update_move.c
  (bump_mark_tree_conflict): Remove now unused variables.

Found by: rhuijben


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1465646 13f79535-47bb-0310-9956-ffa450edef68