Do not report ERROR when sample rate equals 100

src/sql/engine/expr/ob_expr_collection_construct.cpp

@@ -80,7 +80,6 @@ int ObExprCollectionConstruct::calc_result_typeN(ObExprResType &type,
     }
   }
   OX (type.set_type(ObExtendType));
-  OX (type.set_extend_type(type_));
   OX (type.set_udt_id(udt_id_));
   return ret;
 }