You can delete multiple files and folders within the file manger.
1. Click the Delete mode toggle button Off/On. Now tick boxes will show for each file and folder within the folder you are currently viewing.
2. Select as many tick boxes relating to the images or folders you require to delete (you can also select the All tick box to select all), then click the Delete button.
3. Click the Delete button form the popup, to confirm you want to action this deletion.