You can delete any roadmap that you own at any time. It is important to note that deleting a roadmap will delete all content within the roadmap permanently for both you and anyone you have shared it with.
To delete a roadmap first locate the roadmap on your Roadmaps home page. Once identified, simply click the ellipsis and click Delete.
If you want to delete a roadmap that you do not own, reach out to the roadmap owner to remove you as a Viewer or Editor.