Remove unmaintained Netlify CMS admin files
The Netlify CMS has been renamed to https://decapcms.org/
I've chosen to remove this feature because:
- GitLab already provides a WYSIWYG editor
- The feature was unused by us (and the fact that it was broken went unnoticed)
- Fixing this requires setting up OAuth2 on a user profile (we need a dedicated account with a User Owned Application setup)
If anybody wants to add this feature back in, follow the DecapCMS Gitlab docs with Client-Side PKCE Authorization, for storing the Oauth2 app, create a HSBXL Gitlab account and share the password over LDAP with other members.
Edited by Adrian Pascu