Remove FIXME for feature test macro

The value I'd picked was correct, as per the recently published SG10 paper http://wg21.link/p0096r3

llvm-svn: 276309

diff --git a/libcxx/include/atomic b/libcxx/include/atomic
index 11f2152..a25b5bf 100644 (file)
--- a/libcxx/include/atomic
+++ b/libcxx/include/atomic
@@ -557,7 +557,6 @@ void atomic_signal_fence(memory_order m) noexcept;
 #endif
 
 #if _LIBCPP_STD_VER > 14
-// FIXME: use the right feature test macro value as chose by SG10.
 # define __cpp_lib_atomic_is_always_lock_free 201603L
 #endif