Don't reexport bigint from util

ethcore/src/tests/client.rs

@@ -25,6 +25,7 @@ use ethereum;
 use block::IsBlock;
 use tests::helpers::*;
 use types::filter::Filter;
+use bigint::prelude::U256;
 use util::*;
 use devtools::*;
 use miner::Miner;

ethcore/src/tests/evm.rs

@@ -12,6 +12,7 @@ use transaction::SYSTEM_ADDRESS;
 
 use rustc_hex::FromHex;
 
+use bigint::hash::H256;
 use util::*;
 
 evm_test!{test_blockhash_eip210: test_blockhash_eip210_jit, test_blockhash_eip210_int}

ethcore/src/tests/helpers.rs

@@ -20,6 +20,8 @@ use hash::keccak;
 use ethkey::KeyPair;
 use io::*;
 use client::{BlockChainClient, Client, ClientConfig};
+use bigint::prelude::U256;
+use bigint::hash::H256;
 use util::*;
 use spec::*;
 use account_provider::AccountProvider;

ethcore/src/tests/trace.rs

@@ -19,6 +19,7 @@
 use ethkey::KeyPair;
 use hash::keccak;
 use block::*;
+use bigint::prelude::U256;
 use util::*;
 use io::*;
 use spec::*;