@see
     * com.vaadin.data.util.sqlcontainer.query.QueryDelegate#removeRow(com.vaadin
     * .data.util.sqlcontainer.RowItem)
@see
     * com.vaadin.data.util.sqlcontainer.query.QueryDelegate#removeRow(com.vaadin
     * .data.util.sqlcontainer.RowItem) | FreeformQuery.java