Summary of User Request
There is currently no easy way to delete a single Capture.
Add delete button to Captures panel, which "does the needful" :)
Response and Plan
Yeah, embarrassingly basic functionality missing. We'll try to get this done for next version.
It is possible delete the entire database through file system if things grow out of control. Just close the BugJail Application, delete the $HOME/.BugJail directory, and when you launch BugJail again the directory and stuff gets recreated.