To delete a field:
1. Navigate to Components-> .Mighty Resources-> Filters in the Joomla global menu. The Filters page appears and displays a list of existing filters.
2. Select the check box corresponding to the field you want to delete and click the Delete button  in the toolbar, as shown in the following figure:
4. Click the OK button in the confirmation message box.
The selected filter is deleted.
To delete more than on filter, select the check boxes corresponding to the filters, and click the Delete button in the toolbar.