Accidentally licensed an unwanted image

Hello.

I've accidentally clicked on the wrong image icon.

I've licensed the image below and it was by mistake.

After that I selected the right one but now I have an image that I don't need or want.

Can it be undone?

For future reference it should ask something like "Are you sure you want to licence this image?" so that it doesn't happen again. It's not the first time it happens to me.

Many thanks.