Fix some clippy issues

Author: sfauvel

mithril-signer/src/runtime/runner.rs

@@ -161,7 +161,6 @@ impl Runner for SignerRunner {
             .read()
             .await
             .current_signers()
-            .map_err(|e| e.into())
             .cloned()
     }
 
@@ -175,7 +174,6 @@ impl Runner for SignerRunner {
             .read()
             .await
             .next_signers()
-            .map_err(|e| e.into())
             .cloned()
     }
 
@@ -187,7 +185,6 @@ impl Runner for SignerRunner {
             .await
             .current_signers_with_stake()
             .await
-            .map_err(|e| e.into())
     }
 
     /// Get the next signers with their stake.
@@ -198,7 +195,6 @@ impl Runner for SignerRunner {
             .await
             .next_signers_with_stake()
             .await
-            .map_err(|e| e.into())
     }
 
     async fn register_signer_to_aggregator(&self) -> StdResult<()> {

mithril-signer/src/services/epoch_service.rs

@@ -167,7 +167,7 @@ impl EpochService for MithrilEpochService {
             current_epoch.offset_to_next_signer_retrieval_epoch(),
         );
         let current_signers = self.current_signers()?;
-        self.associate_signers_with_stake(retrieval_epoch, &current_signers)
+        self.associate_signers_with_stake(retrieval_epoch, current_signers)
             .await
     }
 
@@ -178,7 +178,7 @@ impl EpochService for MithrilEpochService {
             current_epoch.offset_to_next_signer_retrieval_epoch(),
         );
         let next_signers = self.next_signers()?;
-        self.associate_signers_with_stake(_next_retrieval_epoch, &next_signers)
+        self.associate_signers_with_stake(_next_retrieval_epoch, next_signers)
             .await
     }
 }