Consider removing the XLS format in the report writer output options

Recently discovered that XLS generated reports do NOT indicate negative "-" numbers/values.

For example, using Exceptions to "refund" or reverse a type code amount to an employee shows correctly on the Pay Vouchers and Pay Details, but the "Type Code Amt By Paydate" reports generated in XLS fail to indicate the "-", thus showing the number as a positive on the reports- Big problem for reconciliations.

Removing the XLS option would save those unaware of this.

Generating the same reports in XLSX (or other output options) indicate the "-" values properly.