dissolve util (#7460)

* ethereum-types refactor in progress

* ethereum-types refactor in progress

* ethereum-types refactor in progress

* ethereum-types refactor in progress

* ethereum-types refactor finished

* removed obsolete util/src/lib.rs

* removed commented out code

ethcore/src/spec/genesis.rs

@@ -14,9 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use bigint::prelude::U256;
-use bigint::hash::H256;
-use util::Address;
+use ethereum_types::{H256, U256, Address};
 use hash::KECCAK_NULL_RLP;
 use ethjson;
 use super::seal::Seal;

ethcore/src/spec/seal.rs

@@ -17,7 +17,7 @@
 //! Spec seal.
 
 use rlp::*;
-use bigint::hash::{H64, H256, H520};
+use ethereum_types::{H64, H256, H520};
 use ethjson;
 
 /// Classic ethereum seal.

ethcore/src/spec/spec.rs

@@ -21,15 +21,14 @@ use std::collections::BTreeMap;
 use std::path::Path;
 use std::sync::Arc;
 
-use bigint::hash::{H256, H2048};
-use bigint::prelude::U256;
+use ethereum_types::{H256, H2048, U256, Address};
+use memorydb::MemoryDB;
 use bytes::Bytes;
 use ethjson;
 use hash::{KECCAK_NULL_RLP, keccak};
 use parking_lot::RwLock;
 use rlp::{Rlp, RlpStream};
 use rustc_hex::FromHex;
-use util::*;
 use vm::{EnvInfo, CallType, ActionValue, ActionParams, ParamsType};
 
 use super::genesis::Genesis;