[libc++] Fix feature test macro for __cpp_lib_to_chars
We would have been defining it in <utility> instead of <charconv>. For
the time being, this doesn't change anything since we don't implement
the feature test macro anyways.
Also, as a fly-by, this removes obsolete feature test macro tests. There
was a brief time back in the days when we wrote feature test macro tests
manually. In particular, we had test files for __cpp_lib_to_chars and
__cpp_lib_memory_resource. Since we now have a principled way of generating
these tests with scripts, this commit removes the obsolete (and empty)
tests for these two feature test macros.
Differential Revision: https://reviews.llvm.org/D114243
NOKEYCHECK=True
GitOrigin-RevId: e0f58444e126e80a0d43eb5b88622799910195e6
diff --git a/include/version b/include/version
index d2286f5..7c16ac8 100644
--- a/include/version
+++ b/include/version
@@ -149,7 +149,7 @@
__cpp_lib_three_way_comparison 201907L <compare>
__cpp_lib_to_address 201711L <memory>
__cpp_lib_to_array 201907L <array>
-__cpp_lib_to_chars 201611L <utility>
+__cpp_lib_to_chars 201611L <charconv>
__cpp_lib_to_underlying 202102L <utility>
__cpp_lib_transformation_trait_aliases 201304L <type_traits>
__cpp_lib_transparent_operators 201510L <functional> <memory>