1. Click the [Tools]-[Add-Ins...] in Excel.
2. Remove the check of this add-in and click [OK] button in [Add-Ins] dialog.
Note.
The files does not deleted.
3. If you use Windows and if you need , please put back the Security of the Excel ([Tools]-[Macro]-[Security...]).
Delete files of this add-in ( the add-in , result , help file and so on).