Remove extraneous backwards compatibility note
@@ -258,9 +258,7 @@ paths:
id_access_token:
type: string
description: |-
- An access token previously registered with the identity server. Servers
- can treat this as optional to distinguish between r0.5-compatible clients
- and this specification version.
+ An access token previously registered with the identity server.
sid:
type: string
description: The session identifier given by the identity server.
