swig-py: tests: Follow up to r1886858: Use svn.core.svn_dirent_join.

* subversion/bindings/swig/python/tests/fs.py
  (_svn_path_join_internal): Remove.
  (_get_dir_entries): Use svn.core.svn_dirent_join as it is prepared for this
    purpose.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1886872 13f79535-47bb-0310-9956-ffa450edef68
1 file changed