1 files changed, 0 insertions, 4 deletions
diff --git a/gc.c b/gc.c
index 71277554d7..2bb5f7a5b0 100644
--- a/gc.c
+++ b/gc.c
@@ -35,10 +35,6 @@
 
 #undef rb_data_object_wrap
 
-#ifndef __has_feature
-# define __has_feature(x) 0
-#endif
-
 #ifndef HAVE_MALLOC_USABLE_SIZE
 # ifdef _WIN32
 #   define HAVE_MALLOC_USABLE_SIZE