rm dead imports

src/hash/hashes/mod.rs

@@ -11,7 +11,6 @@ use sapling_crypto::poseidon::{
     QuinticSBox,
 };
 
-use std::default::Default;
 use std::marker::PhantomData;
 use std::sync::Arc;
 

src/hash/pocklington/entropy.rs

@@ -8,8 +8,6 @@ use mp::bignat::BigNat;
 use util::bit::{Bit, Bitvector};
 use util::gadget::Gadget;
 
-use std::default::Default;
-
 #[derive(Debug)]
 pub struct NatTemplate {
     pub random_bits: usize,

src/mp/bignat.rs

@@ -6,7 +6,6 @@ use sapling_crypto::circuit::boolean::Boolean;
 
 use std::borrow::Borrow;
 use std::cmp::{max, min, Ordering};
-use std::convert::From;
 use std::fmt::{self, Debug, Display, Formatter};
 use std::rc::Rc;
 

src/rollup/tx.rs

@@ -102,7 +102,6 @@ pub mod circuit {
     use sapling_crypto::circuit::ecc::EdwardsPoint;
     use sapling_crypto::circuit::num::AllocatedNum;
     use sapling_crypto::jubjub::JubjubEngine;
-    use std::clone::Clone;
     use std::sync::Arc;
 
     use super::{Action, SignedTx};

src/util/num.rs

@@ -4,8 +4,6 @@ use sapling_crypto::bellman::pairing::Engine;
 use sapling_crypto::bellman::{ConstraintSystem, LinearCombination, SynthesisError, Variable};
 use sapling_crypto::circuit::num::AllocatedNum;
 
-use std::convert::From;
-
 use super::bit::{Bit, Bitvector};
 use super::convert::f_to_nat;
 use super::convert::nat_to_f;