fixing more warings

Author: sistemd

cumulus/client/consensus/aura/src/collators/mod.rs

@@ -387,7 +387,7 @@ mod tests {
 	fn build_block(client: &Client, included: Hash) -> (Block, StorageChanges<Block>) {
 		let sproof = sproof_with_parent_by_hash(client, included);
 		let block_builder = client.init_block_builder(None, sproof).block_builder;
-		let (block, storage_changes, _) = block_builder.build().unwrap().into_inner();
+		let (block, storage_changes) = block_builder.build().unwrap().into_inner();
 		(block, StorageChanges::Changes(storage_changes))
 	}
 

cumulus/client/consensus/common/src/level_monitor.rs

@@ -15,7 +15,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Cumulus. If not, see <https://www.gnu.org/licenses/>.
 
-use sc_client_api::{blockchain::Backend as _, Backend, HeaderBackend as _};
+use sc_client_api::{Backend, HeaderBackend as _};
 use sp_blockchain::{HashAndNumber, HeaderMetadata, TreeRoute};
 use sp_runtime::traits::{Block as BlockT, NumberFor, One, Saturating, UniqueSaturatedInto, Zero};
 use std::{

substrate/client/rpc-spec-v2/src/archive/archive.rs

@@ -43,9 +43,7 @@ use sc_client_api::{
 };
 use sc_rpc::utils::Subscription;
 use sp_api::{CallApiAt, CallContext};
-use sp_blockchain::{
-	Backend as BlockChainBackend, Error as BlockChainError, HeaderBackend, HeaderMetadata,
-};
+use sp_blockchain::{Error as BlockChainError, HeaderBackend, HeaderMetadata};
 use sp_core::{Bytes, U256};
 use sp_runtime::{
 	traits::{Block as BlockT, Header as HeaderT, NumberFor},

substrate/client/rpc-spec-v2/src/chain_head/chain_head_follow.rs

@@ -38,9 +38,7 @@ use sc_client_api::{
 use sc_rpc::utils::Subscription;
 use schnellru::{ByLength, LruMap};
 use sp_api::CallApiAt;
-use sp_blockchain::{
-	Backend as BlockChainBackend, Error as BlockChainError, HeaderBackend, HeaderMetadata, Info,
-};
+use sp_blockchain::{Error as BlockChainError, HeaderBackend, HeaderMetadata, Info};
 use sp_runtime::{
 	traits::{Block as BlockT, Header as HeaderT, NumberFor},
 	SaturatedConversion, Saturating,