The pictures are the user avatars the story is assigned to. The only way I know is to ask the users to remove their avatars. Unfortunately it will then place a generic picture there.
If you're not on the cloud you may be able to add code to do what your looking for. I am on the Cloud, so I can't help you with that option.
Hi my Community friends! For those who don't know me, I'm a product marketer on the Confluence Cloud team - nice to meet you! For those of you who do, you know that I've been all up in your Co...
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