This change makes the behavior of `<experimental/coroutine>` consistent with other headers that only work conditionally.
Reviewed By: ldionne, #libc
Spies: Mordante, ChuanqiXu, libcxx-commits, arichardson
Differential Revision: https://reviews.llvm.org/D119964
# pragma GCC system_header
#endif
-#ifdef _LIBCPP_HAS_NO_EXPERIMENTAL_COROUTINES
-# if defined(_LIBCPP_WARNING)
- _LIBCPP_WARNING("<experimental/coroutine> cannot be used with this compiler")
-# else
-# warning <experimental/coroutine> cannot be used with this compiler
-# endif
-#endif
-
#ifndef _LIBCPP_HAS_NO_EXPERIMENTAL_COROUTINES
_LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL_COROUTINES