[ethcore]: reduce re-exports (#11059)

* [ethcore]: reduce re-exports

Last piece of refactoring to close #10130 after work done by @dvdplm et. al

After this PR, we have the following re-exports from other crates in `non-testbuilds`:
- evm::VMType (client)
- ethcore_miner::local_accounts::LocalAccounts (miner)
- ethcore_miner::pool::PendingOrdering (miner)

I think the miner re-exports make sense (closely tied to the module) and `VMType` (related to module but not closely)

* fix(grumbles): remove re-export `VerifierType`

parity/configuration.rs

@@ -29,7 +29,7 @@ use bytes::Bytes;
 use ansi_term::Colour;
 use sync::{NetworkConfiguration, validate_node_url, self};
 use ethkey::{Secret, Public};
-use ethcore::client::{VMType};
+use ethcore::client::VMType;
 use ethcore::miner::{stratum, MinerOptions};
 use snapshot::SnapshotConfiguration;
 use miner::pool;

parity/helpers.rs

@@ -21,8 +21,9 @@ use std::fs::File;
 use std::collections::HashSet;
 use ethereum_types::{U256, Address};
 use journaldb::Algorithm;
-use ethcore::client::{VMType, DatabaseCompactionProfile, ClientConfig, VerifierType};
+use ethcore::client::{VMType, DatabaseCompactionProfile, ClientConfig};
 use ethcore::miner::{PendingSet, Penalization};
+use verification::VerifierType;
 use miner::pool::PrioritizationStrategy;
 use cache::CacheConfig;
 use dir::DatabaseDirectories;