Remove outdated docs

Author: jkczyz

lightning/src/onion_message/messenger.rs

@@ -584,9 +584,6 @@ where
 	OMH::Target: OffersMessageHandler,
 	CMH::Target: CustomOnionMessageHandler,
 {
-	/// Handle an incoming onion message. Currently, if a message was destined for us we will log, but
-	/// soon we'll delegate the onion message to a handler that can generate invoices or send
-	/// payments.
 	fn handle_onion_message(&self, _peer_node_id: &PublicKey, msg: &OnionMessage) {
 		match peel_onion(
 			&*self.node_signer, &self.secp_ctx, &*self.logger, &*self.custom_handler, msg