Revert "[libc++] Only include_next C library headers when they exist"
This reverts commit 226409c62879bf5ff9928cd23a4255cd7c614fe0.
Breaks check-clang on mac, see comments on https://reviews.llvm.org/D136683
NOKEYCHECK=True
GitOrigin-RevId: 674729813e3be02af7bda02cfe577398763f58b9
diff --git a/include/stdio.h b/include/stdio.h
index cea43aa..ad1b4c0 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -104,9 +104,7 @@
# pragma GCC system_header
#endif
-# if __has_include_next(<stdio.h>)
-# include_next <stdio.h>
-# endif
+#include_next <stdio.h>
#ifdef __cplusplus