So while jailbreaking your device it asks for the Pangu app to access your photos. I assume this is due to a exploit they found in the Photos app. So after the jailbreak process they don’t need that access. So to remove access to your Photos app you can do 2 things.

• Go to Settings>Privacy>Photos then toggle off Pangu. 
• Or you can simply delete the app like I did. There is not need for the app after the jailbreak. So deleting it will remove the access. 

Not saying this would be used maliciously but it could. So make sure to cover yourself.