These instructions are for reports designed with MS Query in Excel. The OfficeWriter Designer does not provide a way to remove queries from a report that was designed with Report Builder or Visual Studio.
To remove a query from an OfficeWriter report:
Deleting a query will remove it from your report. However, it will not delete data markers or formulas associated with the query. You must manually remove any reference to the query from your report or you will receive an error when you try to view your report.