Preview- move to Trash

When opening multiple .jpg files (or other format) I can use the "Move to Trash" on all but the last one standing?

Here is a example of two images, and if I select one then the Move to Trash works.

However if I select all or have only one image showing the Move to Trash is disabled?

Is there a way to use the Move to Trash on all images including the last one standing.