removed try_seal from MinerClient interface (#1262)

ethcore/src/client/mod.rs

@@ -36,7 +36,7 @@ use util::hash::{Address, H256, H2048};
 use util::numbers::U256;
 use blockchain::TreeRoute;
 use block_queue::BlockQueueInfo;
-use block::{LockedBlock, SealedBlock, OpenBlock};
+use block::OpenBlock;
 use header::{BlockNumber, Header};
 use transaction::{LocalizedTransaction, SignedTransaction};
 use log_entry::LocalizedLogEntry;
@@ -197,9 +197,6 @@ pub trait BlockChainClient : Sync + Send {
 
 /// Extended client interface used for mining
 pub trait MiningBlockChainClient : BlockChainClient {
-	/// Attempts to seal given block. Returns `SealedBlock` on success and the same block in case of error.
-	fn try_seal(&self, block: LockedBlock, seal: Vec<Bytes>) -> Result<SealedBlock, LockedBlock>;
-
 	/// Returns OpenBlock prepared for closing.
 	fn prepare_open_block(&self, author: Address, gas_floor_target: U256, extra_data: Bytes)
 		-> OpenBlock;