📝Updated documentation for the backend services

Documentation/docs/internal-documentation/backend-services/documents/rest-apis.md

@@ -2,14 +2,6 @@
 description: Documents API
 ---
 
-# Authentication
-<!-- TODO[NOT UP TO DATE] -->
-All the following routes require the usual authentication header. But you can also use other ways of authentication:
-
-- For the download routes, you can use a token generated by the `/internal/services/documents/v1/companies/:company_id/download/token` route (see bellow).
-- All the routes can use a query string `?public_token=token` to authenticate the user.
-- All the routes can use a query string `?tdrive_tab_token=token` to authenticate the user in the context of a channel tab for instance.
-
 # Navigation and drive capabilities
 
 ## Fetch a drive item