From 33ccfe3b65ef5dc896fd9b8d2167300af7a9d749 Mon Sep 17 00:00:00 2001
From: Merope Riddle <merope07@protonmail.com>
Date: Tue, 1 Nov 2016 01:44:11 +0000
Subject: [PATCH] core: remove several unused imports

---
 core/src/core/hash.rs        |  2 +-
 core/src/core/mod.rs         | 13 +++----------
 core/src/core/transaction.rs |  1 -
 core/src/pow/cuckoo.rs       |  1 -
 core/src/pow/mod.rs          |  8 +++-----
 5 files changed, 7 insertions(+), 18 deletions(-)

diff --git a/core/src/core/hash.rs b/core/src/core/hash.rs
index 543b6ddfa..770a45ae0 100644
--- a/core/src/core/hash.rs
+++ b/core/src/core/hash.rs
@@ -17,7 +17,7 @@
 //! Primary hash function used in the protocol
 //!
 
-use byteorder::{ByteOrder, WriteBytesExt, BigEndian};
+use byteorder::{ByteOrder, BigEndian};
 use std::fmt;
 use tiny_keccak::Keccak;
 
diff --git a/core/src/core/mod.rs b/core/src/core/mod.rs
index d1472eed7..af5f7368c 100644
--- a/core/src/core/mod.rs
+++ b/core/src/core/mod.rs
@@ -18,25 +18,18 @@ pub mod block;
 pub mod hash;
 pub mod transaction;
 #[allow(dead_code)]
-#[macro_use]
 
 pub use self::block::{Block, BlockHeader};
 pub use self::transaction::{Transaction, Input, Output, TxProof};
 use self::hash::{Hash, Hashed, ZERO_HASH};
-use ser::{Writeable, Writer, Error, ser_vec};
-
-use time;
+use ser::{Writeable, Writer, Error};
 
 use std::fmt;
 use std::cmp::Ordering;
 
-use secp;
-use secp::{Secp256k1, Signature, Message};
-use secp::key::SecretKey;
+use secp::{self, Secp256k1};
 use secp::pedersen::*;
 
-use tiny_keccak::Keccak;
-
 /// The block subsidy amount
 pub const REWARD: u64 = 1_000_000_000;
 
@@ -198,7 +191,7 @@ impl MerkleRow {
 #[cfg(test)]
 mod test {
 	use super::*;
-	use super::hash::{Hash, Hashed, ZERO_HASH};
+	use core::hash::ZERO_HASH;
 	use secp;
 	use secp::Secp256k1;
 	use secp::key::SecretKey;
diff --git a/core/src/core/transaction.rs b/core/src/core/transaction.rs
index d1d6bcc02..33c715dbd 100644
--- a/core/src/core/transaction.rs
+++ b/core/src/core/transaction.rs
@@ -378,7 +378,6 @@ mod test {
 
 	use secp::{self, Secp256k1};
 	use secp::key::SecretKey;
-	use rand::Rng;
 	use rand::os::OsRng;
 
 	fn new_secp() -> Secp256k1 {
diff --git a/core/src/pow/cuckoo.rs b/core/src/pow/cuckoo.rs
index 6d0a4615c..544aef68b 100644
--- a/core/src/pow/cuckoo.rs
+++ b/core/src/pow/cuckoo.rs
@@ -19,7 +19,6 @@
 
 use std::collections::HashSet;
 use std::cmp;
-use std::fmt;
 
 use crypto::digest::Digest;
 use crypto::sha2::Sha256;
diff --git a/core/src/pow/mod.rs b/core/src/pow/mod.rs
index 7047c10c6..d2069721f 100644
--- a/core/src/pow/mod.rs
+++ b/core/src/pow/mod.rs
@@ -27,12 +27,12 @@ mod cuckoo;
 
 use time;
 
-use core::{Block, BlockHeader, Proof, PROOFSIZE};
+use core::{Block, Proof, PROOFSIZE};
 use core::hash::{Hash, Hashed};
 use pow::cuckoo::{Cuckoo, Miner, Error};
 
 use ser;
-use ser::{Writeable, Writer, ser_vec};
+use ser::{Writeable, Writer};
 
 /// Default Cuckoo Cycle size shift used is 28. We may decide to increase it.
 /// when difficuty increases.
@@ -169,9 +169,7 @@ fn pow_size(b: &Block, target: Proof, sizeshift: u32) -> Result<(Proof, u64), Er
 #[cfg(test)]
 mod test {
 	use super::*;
-	use core::{BlockHeader, Proof};
-	use core::hash::Hash;
-	use std::time::Instant;
+	use core::Proof;
 	use genesis;
 
 	#[test]