On the fsfs-format7 branch: remove docstrings from non-static functions
in .c files because they have already be documented in the header.

* subversion/libsvn_fs_fs/low_level.c
  (svn_fs_fs__parse_revision_trailer,
   svn_fs_fs__unparse_revision_trailer,
   svn_fs_fs__parse_representation,
   svn_fs_fs__unparse_representation,
   svn_fs_fs__read_rep_header,
   svn_fs_fs__read_changes,
   svn_fs_fs__write_changes): drop function docstrings


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/fsfs-format7@1478502 13f79535-47bb-0310-9956-ffa450edef68