* [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`