Remove the last bits of unknown_os in the code base (#9718)

* Remove the last bits of unknown_os in the code base

* Fmt

substrate/client/service/src/builder.rs

@@ -22,8 +22,7 @@ use crate::{
 	config::{Configuration, KeystoreConfig, PrometheusConfig, TransactionStorageMode},
 	error::Error,
 	metrics::MetricsService,
-	start_rpc_servers, MallocSizeOfWasm, RpcHandlers, SpawnTaskHandle, TaskManager,
-	TransactionPoolAdapter,
+	start_rpc_servers, RpcHandlers, SpawnTaskHandle, TaskManager, TransactionPoolAdapter,
 };
 use futures::{channel::oneshot, future::ready, FutureExt, StreamExt};
 use jsonrpc_pubsub::manager::SubscriptionManager;
@@ -552,7 +551,7 @@ where
 	TBl::Header: Unpin,
 	TBackend: 'static + sc_client_api::backend::Backend<TBl> + Send,
 	TExPool: MaintainedTransactionPool<Block = TBl, Hash = <TBl as BlockT>::Hash>
-		+ MallocSizeOfWasm
+		+ parity_util_mem::MallocSizeOf
 		+ 'static,
 	TRpc: sc_rpc::RpcExtension<sc_rpc::Metadata>,
 {