Removing co-authors after re-running study
Just ask them if they’d be okay with you reworking the paper and cutting them out of the author list, or they’d still like to contribute to it.
So your paper has a flaw that you need to rework to get published.  Your coauthors aren’t interested in doing so, so why not just do the polite thing and ask them if they still want to be involved?
If they agree to be cut out of the revised paper, they wouldn’t have any reason to be upset with you for doing so. If they agree to take an active role in revising the paper, they don’t have any reason to be upset, either.