Hi @Darren C
Thank you for posting your question in the community. Unfortunately, there is not a way to remove someone via a flow step from a status list.
The following resource outlines the available methods of removing someone from a list: https://help.klaviyo.com/hc/en-us/articles/4407853491483
However, rather than a static list, if you were using a profile property to create segments, you can use a flow step to remove a profile property value. So, this might be an alternative approach for your campaigns.
I hope this helps! Please let us know if you have any additional questions.
Thanks,
Bryan