Удаление объекта - с помощью метода delete
и входящим в него request-параметром id:
exports.delete = (req, res) => { const id = req.params.id; Tutorial.destroy({ where: { id: id } }) .then(num => { if (num == 1) { res.send({ message: "Tutorial was deleted successfully!" }); } else { res.send({ message: `Cannot delete Tutorial with id=${id}. Maybe Tutorial was not found!` }); } }) .catch(err => { res.status(500).send({ message: "Could not delete Tutorial with id=" + id }); }); };