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