* insns.def (concatarray): removed unused variable.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28146 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

insns.def

@@ -498,7 +498,6 @@ concatarray
 (VALUE ary1, VALUE ary2st)
 (VALUE ary)
 {
-    const VALUE *sp = GET_SP();
     const VALUE ary2 = ary2st;
     VALUE tmp1 = rb_check_convert_type(ary1, T_ARRAY, "Array", "to_a");
     VALUE tmp2 = rb_check_convert_type(ary2, T_ARRAY, "Array", "to_a");