Delete an image format
You can delete image formats that you are no longer using.
The image must be checked out.
		Each image object can have up to three different formats of an image saved
				within it. You can delete any format that you are not using, but there must always
				be at least one format.
			Note: If you delete the image set as
					the default format, you must pick another format as the default format. You are
					reminded to pick a default format when you try to check in the image.
To delete an image format: