vm_insnhelper.c: no insns_info in jit

* vm_insnhelper.c: instructions info are not used in jit source
  code.  resolved a warning by transform_mjit_header.rb.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62505 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

vm_insnhelper.c

@@ -10,7 +10,9 @@
 
 /* finish iseq array */
 #include "insns.inc"
+#ifndef MJIT_HEADER
 #include "insns_info.inc"
+#endif
 #include <math.h>
 #include "constant.h"
 #include "internal.h"