Remove redefinition of __cpp_lib_array_constexpr

	* include/bits/range_access.h (__cpp_lib_array_constexpr): Do not
	redefine macro defined in <bits/stl_iterator.h>.

From-SVN: r240488

libstdc++-v3/ChangeLog

 2016-09-26  Jonathan Wakely  <jwakely@redhat.com>
 
+	* include/bits/range_access.h (__cpp_lib_array_constexpr): Do not
+	redefine macro defined in <bits/stl_iterator.h>.
+
 	* include/bits/stl_map.h (map::extract(const_iterator)): Assert that
 	iterator is not past-the-end.
 	* include/bits/stl_multimap.h (multimap::extract(const_iterator)):

libstdc++-v3/include/bits/range_access.h

@@ -38,10 +38,6 @@ namespace std _GLIBCXX_VISIBILITY(default)
 {
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
-#if __cplusplus >= 201402L
-# define __cpp_lib_array_constexpr 201603L
-#endif
-
   /**
    *  @brief  Return an iterator pointing to the first element of
    *          the container.