Unfortunately, at the moment there is no out-of-the-box way to delete a branch from a review. There is a feature request to add that functionality: https://jira.atlassian.com/browse/CRUC-7223. Please be sure to watch it, and vote on it, so that you're notified if this is implemented in a future release.
The workaround would be to abandon the review and start a new one, or follow some developer suggestions to remove content or changesets in the following discussion:
Hope this helps!
On October 20, 2021, Atlassian published a security advisory for Jira Service Management. The full advisory is available at this link. We've seen a number of questions already asking for...
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