by Mary Cooch.
Well I would imagine this icon is theme dependent - one way would be to replace it in whichever theme you are using with a transparent png of the same size. If you click on the icon to see its properties you should be able to see the path to the icon and its name - then you replace it with a file of the same name which is transparent (ie, invisible, hopefully) There is probably a code way but I don't know about code.