Is it possible to delete issues on GitLab?

It is now possible to delete issues starting with GitLab 8.6:

GitLab 8.6 released with Deploy to Kubernetes and Subscribe to Label

Delete Issues

Sometimes, simply closing an issue or merge request is not sufficient. For those times, we are now making it possible to delete issues and merge requests.

Only owners can delete issues by editing the issue or merge request and clicking, you guessed it, Delete.