Warning: Make sure you do not need any of the files or folders in the Trash before you empty it, because the files are deleted permanently once the Trash is emptied. If you need to re-instate any of the files or folders, simply click on the link of the file or folder's name.
To empty the Trash:
Click on the trash can icon (image) in the Trash area. This will permanently delete all of the files in the Trash.