Companion for aura CompatibilityMode (#1803)

* Companion for aura CompatibilityMode

As no parachain was launched with the broken authority set change handling we don't need to expose
the compatibility mode.

* FMT

* update lockfile for {"substrate", "polkadot"}

Co-authored-by: parity-processbot <>

cumulus/polkadot-parachain/src/service.rs

@@ -1029,23 +1029,25 @@ where
 	let aura_verifier = move || {
 		let slot_duration = cumulus_client_consensus_aura::slot_duration(&*client2).unwrap();
 
-		Box::new(cumulus_client_consensus_aura::build_verifier::<<AuraId as AppKey>::Pair, _, _>(
-			cumulus_client_consensus_aura::BuildVerifierParams {
-				client: client2.clone(),
-				create_inherent_data_providers: move |_, _| async move {
-					let timestamp = sp_timestamp::InherentDataProvider::from_system_time();
+		Box::new(
+			cumulus_client_consensus_aura::build_verifier::<<AuraId as AppKey>::Pair, _, _, _>(
+				cumulus_client_consensus_aura::BuildVerifierParams {
+					client: client2.clone(),
+					create_inherent_data_providers: move |_, _| async move {
+						let timestamp = sp_timestamp::InherentDataProvider::from_system_time();
 
-					let slot =
+						let slot =
 							sp_consensus_aura::inherents::InherentDataProvider::from_timestamp_and_slot_duration(
 								*timestamp,
 								slot_duration,
 							);
 
-					Ok((slot, timestamp))
+						Ok((slot, timestamp))
+					},
+					telemetry: telemetry_handle,
 				},
-				telemetry: telemetry_handle,
-			},
-		)) as Box<_>
+			),
+		) as Box<_>
 	};
 
 	let relay_chain_verifier =