Removing images from WP Cache?

Hi

I have recently been asked by a film studio to remove some images from the latest RoboCop film.

I have deleted them on the liveforfilms.com WordPress Media section.

However, the following images are still showing

https://i0.wp.com/www.liveforfilms.com/wp-content/uploads/2012/10/Robocop-3.jpeg
https://i2.wp.com/www.liveforfilms.com/wp-content/uploads/2012/10/Robocop-2.jpeg
https://i1.wp.com/www.liveforfilms.com/wp-content/uploads/2012/10/Robocop-1.jpeg
https://i2.wp.com/www.liveforfilms.com/wp-content/uploads/2012/10/Robocop-41.jpg

These appear to be on the WP.com cache and I cannot access it to delete them.

Could somebody let me know how to delete them or how long they stay on the cache before they are deleted?

Thanks

The blog I need help with is https://www.liveforfilms.com.