I'm trying to do some clean up in our on prem Jira Service Desk instance and I've come across what looks like duplicate issue types? I know they were created by Jira Service Desk (it's in the description), but do they both need to exist? There are a few other issue types (Problem, Incident, Service Request, Service Request with Approvals) that appear to have the same duplication.
We only have issues using the issue type without '[System]' in front of it. I would just delete the ones we aren't using but that '[System]' makes me wonder if I'll break something. Can anyone give me any insight into this?