expression_grammar.diff

diff --git a/include/mapnik/expression_grammar.hpp b/include/mapnik/expression_grammar.hpp
index 702e18a..c93a8a3 100644
--- a/include/mapnik/expression_grammar.hpp
+++ b/include/mapnik/expression_grammar.hpp
@@ -139,11 +139,8 @@ struct expression_grammar : qi::grammar<Iterator, expr_node(), space_type>
         using qi::_a;
         using qi::_b;
         using qi::_r1;
-#if BOOST_VERSION > 104200
         using qi::no_skip;
-#else
         using qi::lexeme;
-#endif
         using qi::_val;
         using qi::lit;
         using qi::int_;