[libcxx] Remove _LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED
All supported compilers should support
_LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED so this can be removed.
Reviewed By: ldionne, #libc, Quuxplusone
Differential Revision: https://reviews.llvm.org/D107239
NOKEYCHECK=True
GitOrigin-RevId: 1123100a16a321d70508e2508ebc5d57ce7163dc
diff --git a/include/version b/include/version
index a0ec730..6adea75 100644
--- a/include/version
+++ b/include/version
@@ -328,9 +328,7 @@
# define __cpp_lib_integer_comparison_functions 202002L
# endif
# define __cpp_lib_interpolate 201902L
-# if !defined(_LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED)
-# define __cpp_lib_is_constant_evaluated 201811L
-# endif
+# define __cpp_lib_is_constant_evaluated 201811L
// # define __cpp_lib_is_layout_compatible 201907L
# define __cpp_lib_is_nothrow_convertible 201806L
// # define __cpp_lib_is_pointer_interconvertible 201907L