Cleanup build warnings (#1391)

* cleanup some unused vars etc.

* rustfmt

chain/src/chain.rs

@@ -25,9 +25,7 @@ use lmdb;
 use core::core::hash::{Hash, Hashed};
 use core::core::merkle_proof::MerkleProof;
 use core::core::target::Difficulty;
-use core::core::{
-	Block, BlockHeader, Output, OutputFeatures, OutputIdentifier, Transaction, TxKernel,
-};
+use core::core::{Block, BlockHeader, Output, OutputIdentifier, Transaction, TxKernel};
 use core::global;
 use error::{Error, ErrorKind};
 use grin_store::Error::NotFoundErr;
@@ -396,7 +394,7 @@ impl Chain {
 		let res = txhashset.is_unspent(output_ref);
 		match res {
 			Err(e) => Err(e),
-			Ok((h, p)) => Ok(h),
+			Ok((h, _)) => Ok(h),
 		}
 	}
 

p2p/src/protocol.rs

@@ -20,7 +20,7 @@ use std::sync::Arc;
 
 use conn::{Message, MessageHandler, Response};
 use core::core;
-use core::core::hash::{Hash, Hashed};
+use core::core::hash::Hash;
 use msg::{
 	BanReason, GetPeerAddrs, Headers, Locator, PeerAddrs, Ping, Pong, SockAddr, TxHashSetArchive,
 	TxHashSetRequest, Type,
@@ -120,7 +120,6 @@ impl MessageHandler for Protocol {
 					"handle_payload: received block: msg_len: {}", msg.header.msg_len
 				);
 				let b: core::Block = msg.body()?;
-				let bh = b.hash();
 
 				adapter.block_received(b, self.addr);
 				Ok(None)
@@ -161,7 +160,6 @@ impl MessageHandler for Protocol {
 					"handle_payload: received compact block: msg_len: {}", msg.header.msg_len
 				);
 				let b: core::CompactBlock = msg.body()?;
-				let bh = b.hash();
 
 				adapter.compact_block_received(b, self.addr);
 				Ok(None)