Delete cached image from Photon

Hi,

Please could you help delete this image from Photon and/or anywhere else it may be stored or instruct me how to go about it? I have now turned Photon off but this image is still accessible:

https://i1.wp.com/fairliecommunitycouncil.org/wp-content/uploads/2017/02/Screen-Shot-2017-02-02-at-00.44.13.png

Thank you

David

The page I need help with: https://i1.wp.com/fairliecommunitycouncil.org/wp-content/uploads/2017/02/Screen-Shot-2017-02-02-at-00.44.13.png

The page I need help with: [log in to see the link]