grin v5.3 (0057) Remove unused imports (mimblewimble#3589)

core/src/core/committed.rs

@@ -15,7 +15,6 @@
 //! The Committed trait and associated errors.
 
 use failure::Fail;
-use keychain;
 use keychain::BlindingFactor;
 use util::secp::key::SecretKey;
 use util::secp::pedersen::Commitment;

core/src/genesis.rs

@@ -24,7 +24,6 @@ use crate::core::hash::Hash;
 use crate::pow::{Difficulty, Proof, ProofOfWork};
 use chrono::prelude::{TimeZone, Utc};
 use keychain::BlindingFactor;
-use util;
 use util::secp::constants::SINGLE_BULLET_PROOF_SIZE;
 use util::secp::pedersen::{Commitment, RangeProof};
 use util::secp::Signature;

core/src/lib.rs

@@ -30,7 +30,6 @@ extern crate serde_derive;
 use serde;
 #[macro_use]
 extern crate log;
-use failure;
 #[macro_use]
 extern crate failure_derive;
 #[macro_use]

core/src/libtx/error.rs

@@ -15,7 +15,6 @@
 //! libtx specific errors
 use crate::core::transaction;
 use failure::{Backtrace, Context, Fail};
-use keychain;
 use std::fmt::{self, Display};
 use util::secp;
 

core/src/pow.rs

@@ -33,8 +33,6 @@ pub use self::types::*;
 use crate::core::{Block, BlockHeader};
 use crate::genesis;
 use crate::global;
-use chrono;
-use num;
 
 #[macro_use]
 mod common;

core/src/pow/common.rs

@@ -15,10 +15,10 @@
 //! Common types and traits for cuckoo family of solvers
 
 use crate::pow::error::Error;
-use crate::pow::num::{PrimInt, ToPrimitive};
 use crate::pow::siphash::siphash24;
 use blake2::blake2b::blake2b;
 use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
+use num::{PrimInt, ToPrimitive};
 use std::fmt;
 use std::hash::Hash;
 use std::io::Cursor;

keychain/src/mnemonic.rs

@@ -91,7 +91,7 @@ pub fn to_entropy(mnemonic: &str) -> Result<Vec<u8>, Error> {
 
 	let mut hash = [0; 32];
 	let mut sha2sum = Sha256::default();
-	sha2sum.update(&entropy.clone());
+	sha2sum.update(&entropy);
 	hash.copy_from_slice(sha2sum.finalize().as_slice());
 
 	let actual = (hash[0] >> (8 - checksum_bits)) & mask;

src/build/build.rs

@@ -14,8 +14,6 @@
 
 //! Build hooks to spit out version+build time info
 
-use built;
-
 use std::env;
 use std::path::{Path, PathBuf};
 use std::process::Command;