Deprecate entity slugs
Deprecate entity slugs

They are only used a single time in the whole Nextcloud Github
organization. We can inline the code there and slim down the public API.

Signed-off-by: Christoph Wurst <7abde52c298496fa169fb750f91f213a282142af@winzerhof-wurst.at>

nextcloud/server,nextcloud/server,nextcloud/server,nextcloud/server