* In an earlier iteration of code suggestions, this endpoint was used
  to generate a JWT for the IDE, which then made calls directly to the
  AI Gateway.
* This endpoint already returns a 404 for gitlab.com, but we kept it
  around for older self-managed GitLab instances that were using code
  suggestions.
* As of Feb 15th, all Code Suggestions users must be on 16.7 or newer if
  they are self managed so we can safely get rid of this endpoint.
* https://gitlab.com/gitlab-org/editor-extensions/gitlab-lsp/-/issues/137

Changelog: removed
EE: true