Remove duplicated include

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60483 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-10-27 15:13:59 +00:00 · 2017-10-27 15:13:59 +00:00 · a5e9f2e6cd
--- a/error.c
+++ b/error.c
@ -525,7 +525,7 @@ die(void)

    abort();
 }
-#include <stdio.h>
+
 void
 rb_bug(const char *fmt, ...)
 {