This feature has been disabled since 13.6 with a feature flag. Seems like we have not gotten any feedback that we should enable it, so let's remove it from the code base.
One motivation for removing it: It uses the Vue runtime template compiler. Removing this will bring us one step closer to shipping Vue without the template compiler which will bring a performance improvement across all pages.
If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines: