Fixing clippy warnings

ethcore/src/account.rs

@@ -342,7 +342,6 @@ mod tests {
 
 	#[test]
 	fn new_account() {
-		use rustc_serialize::hex::ToHex;
 
 		let a = Account::new(U256::from(69u8), U256::from(0u8), HashMap::new(), Bytes::new());
 		assert_eq!(a.rlp().to_hex(), "f8448045a056e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421a0c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470");
@@ -354,7 +353,6 @@ mod tests {
 
 	#[test]
 	fn create_account() {
-		use rustc_serialize::hex::ToHex;
 
 		let a = Account::new(U256::from(69u8), U256::from(0u8), HashMap::new(), Bytes::new());
 		assert_eq!(a.rlp().to_hex(), "f8448045a056e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421a0c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470");

ethcore/src/basic_authority.rs

@@ -200,7 +200,6 @@ mod tests {
 	use super::*;
 	use common::*;
 	use block::*;
-	use engine::*;
 	use tests::helpers::*;
 	use util::keys::{TestAccountProvider, TestAccount};
 

ethcore/src/ethereum/ethash.rs

@@ -299,7 +299,6 @@ mod tests {
 
 	use common::*;
 	use block::*;
-	use engine::*;
 	use tests::helpers::*;
 	use super::super::new_morden;
 

ethcore/src/ethereum/mod.rs

@@ -51,7 +51,6 @@ pub fn new_morden() -> Spec { Spec::load(include_bytes!("../../res/ethereum/mord
 mod tests {
 	use common::*;
 	use state::*;
-	use engine::*;
 	use super::*;
 	use tests::helpers::*;
 

ethcore/src/state.rs

@@ -358,8 +358,6 @@ mod tests {
 
 use super::*;
 use util::common::*;
-use util::trie::*;
-use util::rlp::*;
 use account::*;
 use tests::helpers::*;
 use devtools::*;

ethcore/src/trace/db.rs

@@ -22,7 +22,7 @@ use std::sync::{RwLock, Arc};
 use std::path::Path;
 use bloomchain::{Number, Config as BloomConfig};
 use bloomchain::group::{BloomGroupDatabase, BloomGroupChain, GroupPosition, BloomGroup};
-use util::{FixedHash, H256, H264, Database, DBTransaction};
+use util::{H256, H264, Database, DBTransaction};
 use header::BlockNumber;
 use trace::{BlockTraces, LocalizedTrace, Config, Switch, Filter, Database as TraceDatabase, ImportRequest,
 DatabaseExtras};

ethcore/src/types/ids.rs

@@ -19,7 +19,6 @@
 use util::hash::H256;
 use header::BlockNumber;
 use ipc::binary::BinaryConvertError;
-use ipc::binary::BinaryConvertable;
 use std::mem;
 use std::collections::VecDeque;