These are not required because MySQL is not
supported anymore

This is part of migration of Folder View to Vue

A new `discussion_id` argument on the `createNote` mutation allows
people to create a note within that discussion.

The ability to lazy-load Discussions has been added, so
GraphQL.object_from_id can treat Discussions the same as AR objects and
batch load them.

https://gitlab.com/gitlab-org/gitlab-ce/issues/62826
https://gitlab.com/gitlab-org/gitlab-ee/issues/9489

https://gitlab.com/gitlab-org/gitlab-ee/issues/9489

- Remove Gitaly call check for fields that have a constant complexity
declared
- Add associated test

- Add 1 for all fields that call Gitaly (with resolvers or without)
- Clarify comment regarding Gitaly call alert
- Expose predicate `calls_gitaly?` instead of ivar

- Move `calls_gitaly_check` to public
- Add instrumentation for flagging missing CallsGitaly declarations
- Wrap resolver proc in before-and-after Gitaly counts to get the net
Gitaly call count for the resolver.

- If Gitaly calls are missing, it could be due to a conditional and
may just become noise

 - Add a complexity of 1 if Gitaly is called at least once
 - Add an error notification if `calls_gitaly` isn't right for a
 particular field