Then what are those 2 other GTR2 shortcut icons on your desktop ? .... those are not white so surely still used !
Did you move your install to another location on your disk .... and didn't change or delete this older unuseful shortcut of the older GTR2 location ?
I really don't see any other reason. .... this GTR2 Icon is just a shortcut and if it was not updated ... delete it, no risk to delete the software of course.