It's not possible to un license an image but I've added an image credit to your account so you can select another image to use instead.
Hope this helps !!!
WOW, thats amazing and so quick.
Thank you so much. Adobe rocks!
You're welcome !!!
Darn. It happened again. Its so dangerous with the roll-over. I understand that this is a nice design option, but it will cause so many accidental licenses.