Remove unused code

ethcore/service/src/lib.rs

@@ -36,7 +36,6 @@ extern crate tempdir;
 
 mod error;
 mod service;
-mod stop_guard;
 
 #[cfg(test)]
 extern crate kvdb_rocksdb;

ethcore/service/src/service.rs

@@ -23,7 +23,6 @@ use std::time::Duration;
 use ansi_term::Colour;
 use ethereum_types::H256;
 use io::{IoContext, TimerToken, IoHandler, IoService, IoError};
-use stop_guard::StopGuard;
 
 use sync::PrivateTxHandler;
 use blockchain::{BlockChainDB, BlockChainDBHandler};
@@ -84,7 +83,6 @@ pub struct ClientService {
 	snapshot: Arc<SnapshotService>,
 	private_tx: Arc<PrivateTxService>,
 	database: Arc<BlockChainDB>,
-	_stop_guard: StopGuard,
 }
 
 impl ClientService {
@@ -152,15 +150,12 @@ impl ClientService {
 
 		spec.engine.register_client(Arc::downgrade(&client) as _);
 
-		let stop_guard = StopGuard::new();
-
 		Ok(ClientService {
 			io_service: Arc::new(io_service),
 			client: client,
 			snapshot: snapshot,
 			private_tx,
 			database: blockchain_db,
-			_stop_guard: stop_guard,
 		})
 	}