QT - Como limpiar mi QTreeview con PyQt5

class FAcceso(QTreeView):

    def __init__(self):

        super().__init__()

        self.setStyleSheet("background-color: #D7DEBE; color: #24095E;")

        self.setRootIsDecorated(False)

        self.setAlternatingRowColors(True)

        self.setSortingEnabled(True)

        model = QStandardItemModel(0, 4, self)

        model.setHeaderData(0, Qt.Horizontal, "ID")

        model.setHeaderData(1, Qt.Horizontal, "NUMERO BOMBA")

        model.setHeaderData(2, Qt.Horizontal, "DESC. BOMBA")

        model.setHeaderData(3, Qt.Horizontal, "NRO.FISICO")

        self.setModel(model)

        self.setEditTriggers(QAbstractItemView.NoEditTriggers)

        self.show()

        self.clicked.connect(self.click_en_view)

        model.removeRow(0)

        model.removeRow(1)

        model.removeRow(2)

        model.removeRow(3)

        model.insertRow(0)

        model.setData(model.index(0, 0), 'registro 1')

        model.setData(model.index(0, 1), 'registro 2')

        model.setData(model.index(0, 2), 'registro 3')

        model.setData(model.index(0, 3), 'registro 4')

        self.show()