v1.2.2 in beta (#1581)

* v1.2.2

* Fixed warning

util/Cargo.toml

@@ -3,7 +3,7 @@ description = "Ethcore utility library"
 homepage = "http://ethcore.io"
 license = "GPL-3.0"
 name = "ethcore-util"
-version = "1.2.1"
+version = "1.2.2"
 authors = ["Ethcore <admin@ethcore.io>"]
 build = "build.rs"
 

util/bigint/src/uint.rs

@@ -43,7 +43,7 @@ use std::cmp;
 
 use std::str::{FromStr};
 use std::convert::From;
-use std::hash::{Hash, Hasher};
+use std::hash::{Hash};
 use std::ops::*;
 use std::cmp::*;