Remove light client companion (#4191)

* Remove light client companion

* Update substrate

* cargo fmt

* Fixed benches

* fmt

polkadot/node/service/src/lib.rs

@@ -107,8 +107,7 @@ pub use sp_api::{ApiRef, ConstructRuntimeApi, Core as CoreApi, ProvideRuntimeApi
 pub use sp_runtime::{
 	generic,
 	traits::{
-		self as runtime_traits, BlakeTwo256, Block as BlockT, DigestFor, HashFor,
-		Header as HeaderT, NumberFor,
+		self as runtime_traits, BlakeTwo256, Block as BlockT, HashFor, Header as HeaderT, NumberFor,
 	},
 };
 
@@ -795,7 +794,6 @@ where
 			transaction_pool: transaction_pool.clone(),
 			spawn_handle: task_manager.spawn_handle(),
 			import_queue,
-			on_demand: None,
 			block_announce_validator_builder: None,
 			warp_sync: Some(warp_sync),
 		})?;
@@ -865,8 +863,6 @@ where
 		rpc_extensions_builder: Box::new(rpc_extensions_builder),
 		transaction_pool: transaction_pool.clone(),
 		task_manager: &mut task_manager,
-		on_demand: None,
-		remote_blockchain: None,
 		system_rpc_tx,
 		telemetry: telemetry.as_mut(),
 	})?;