Remove /api/operations/:id

[jrozner]

It looks like we still provide this endpoint for the api server and are still returning the actual id when we request /api/operations rather than just the slug. There is a note that we should remove the id when the client no longer needs it. I doesn't seem like the client actually uses that endpoint and everything else is done via slug. Is this endpoint just safe to remove? If not, what code needs to be updated?