I had a number of stories already created, and then set up a release version. In the backlog screen, I selected all the affected issues and dragged them to the release, so now they are all in the release. We have since decided one of the stories does not need to be included in this release and would like to remove it. I can't figure out how, though.
Searches have told me that I need to edit the Fixes Version or Affects Version field and remove the release from that field, however we don't have either of those fields in our story screens. When I added them, they were still blank and therefore I couldn't just delete the contents.