Automation to delete unused issue types

[Amir Katz (Outseer)]

After migration a subset of projects from Jira server to cloud, the cloud instance has a large number of issue types that are not included in any issue type scheme (apart from the default one, of course).

I can delete them in the UI, one by one, but that's not a good use of my time.

I can also delete them using REST API, but again, one by one.

I would like to automate it, preferable in Python. I know how to do it, but I wonder whether anyone has already done that.