Small code cleanup in ra_plugin.c. No functional changes.

* subversion/libsvn_ra_local/ra_plugin.c
  (get_node_props): Remove iprop support and cleanup arguments.
  (svn_ra_local__get_file,
   svn_ra_local__get_dir): Update caller that only needs node props.
  (svn_ra_local__get_inherited_props): Obtain iprops directly.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1552456 13f79535-47bb-0310-9956-ffa450edef68