Remove CallContract and RegistryInfo re-exports from ethcore/client (#10205)

* Remove re-export of `CallContract` and `RegistryInfo` from `ethcore/client`

* Remove CallContract and RegistryInfo re-exports again

This was missed while fixing merge conflicts

ethcore/src/machine.rs

@@ -30,7 +30,8 @@ use vm::{EnvInfo, Schedule, CreateContractAddress};
 
 use block::{ExecutedBlock, IsBlock};
 use builtin::Builtin;
-use client::{BlockInfo, CallContract};
+use call_contract::CallContract;
+use client::BlockInfo;
 use error::Error;
 use executive::Executive;
 use spec::CommonParams;