Assume variadic macro support.

include/boost/preprocessor/tuple/replace.hpp

@@ -13,9 +13,6 @@
 # define BOOST_PREPROCESSOR_TUPLE_REPLACE_HPP
 #
 # include <boost/preprocessor/config/config.hpp>
-#
-# if BOOST_PP_VARIADICS
-#
 # include <boost/preprocessor/array/replace.hpp>
 # include <boost/preprocessor/array/to_tuple.hpp>
 # include <boost/preprocessor/tuple/to_array.hpp>
@@ -32,6 +29,4 @@
     BOOST_PP_ARRAY_TO_TUPLE(BOOST_PP_ARRAY_REPLACE_D(d, BOOST_PP_TUPLE_TO_ARRAY(tuple), i, elem)) \
 /**/
 #
-# endif // BOOST_PP_VARIADICS
-#
 # endif // BOOST_PREPROCESSOR_TUPLE_REPLACE_HPP