Remove the `/groups/<group_name>/-/epics.json` endpoint
After we switch the Roadmap to use GraphQL in https://gitlab.com/gitlab-org/gitlab-ee/issues/12887, this endpoint is no longer needed.
To render the Roadmap, we make a request to /groups/<group_name>/-/epics.json
We should create a separate serializer so that we don't return a lot of unneeded attributes in EpicEntity
.
If this endpoint is just used for the roadmap (from an initial look, it looks like it is), we can just change the serializer being used. If not, we can add an extra param / option like serializer=roadmap
.
Blocked by: #12887 (closed)
Edited by Donald Cook