Merge "Remove unused defines from <features.h>."
diff --git a/libc/include/features.h b/libc/include/features.h
index 057d1de..52184a8 100644
--- a/libc/include/features.h
+++ b/libc/include/features.h
@@ -37,21 +37,4 @@
# define __USE_GNU 1
#endif
-/* C95 support */
-#undef __USE_ISOC95
-#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199409L
-# define __USE_ISOC95 1
-#endif
-
-/* C99 support */
-#undef __USE_ISOC99
-#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
-# define __USE_ISOC99 1
-#endif
-
-/* Posix support */
-#define __USE_POSIX 1
-#define __USE_POSIX2 1
-#define __USE_XPG 1
-
#endif /* _FEATURES_H_ */