Remove runtime access from RPC #1

The following rpc methods no longer use the runtime Api impl:

eth_getBlockByHash
eth_getBlockByNumber
eth_getTransactionCount
eth_getBlockTransactionCountByHash
eth_getBlockTransactionCountByNumber
eth_getTransactionByHash
eth_getTransactionByBlockHashAndIndex
eth_getTransactionByBlockNumberAndIndex
eth_getTransactionReceipt
eth_getLogs