How do I unlicense an image accidentally purchased?

[#1]

I was going through and deleting old libraries when I accidentally clicked on the license button on an image. How do I reverse the purchase?

[#2]

I was going through and deleting old libraries when I accidentally clicked on the license button on an image. How do I reverse the purchase?

[#3]

Hi there, 

Would you mind sharing the File #?

Thanks 

Kanika