Frontend: Remove namespace catalog
What does this MR do and why?
Resolves #429669 (closed)
This is just a large code removal!
Since we transitioned to introducing a public CI/CD Catalog instead of a namespaced structure, we are now removing the namespaced references.
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
How to set up and validate locally
Any URL which is `<project>/-/ci/catalog/resources` should not exist. All code references should also be removed.
Edited by Briley Sandlin