title: Remove images from Listview Columns
body: <p>For the columns in a <code>ListView</code> I am using my own Images to show if the sorting is ascending or descending. When I set the <code>column.ImageKey</code> property the column's text is moved to the right to make room for an image. The problem I'm having is how to remove the Image when I don't need it anymore. By setting the <code>column.ImageKey = ""</code> and <code>column.ImageIndex = -1</code> I remove the Image, but the text isn't on it's starting position. So basically I just reset the Image Objects bitmap but I don't remove the Image Object itself. So I'm wondering how to remove/disable the Image Object.</p>