Use sha3 for fat key

ethcore/src/account_db.rs

@@ -121,10 +121,6 @@ impl<'db> HashDB for AccountDB<'db>{
 	fn remove(&mut self, _key: &H256) {
 		unimplemented!()
 	}
-
-	fn get_aux(&self, hash: &[u8]) -> Option<DBValue> {
-		self.db.get_aux(hash)
-	}
 }
 
 /// DB backend wrapper for Account trie
@@ -197,18 +193,6 @@ impl<'db> HashDB for AccountDBMut<'db>{
 		let key = combine_key(&self.address_hash, key);
 		self.db.remove(&key)
 	}
-
-	fn insert_aux(&mut self, hash: Vec<u8>, value: Vec<u8>) {
-		self.db.insert_aux(hash, value);
-	}
-
-	fn get_aux(&self, hash: &[u8]) -> Option<DBValue> {
-		self.db.get_aux(hash)
-	}
-
-	fn remove_aux(&mut self, hash: &[u8]) {
-		self.db.remove_aux(hash);
-	}
 }
 
 struct Wrapping<'db>(&'db HashDB);