ci: Appease Clippy (#761)

This should make the CI green again, as the lints have been introduced
in a new stable release, outside of the changes made in this repository.

examples/examples/dynamic_multisig.rs

@@ -70,7 +70,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     );
 
     // Submit it:
-    let encoded = hex::encode(&api.tx().call_data(&tx)?);
+    let encoded = hex::encode(api.tx().call_data(&tx)?);
     println!("Call data: {encoded}");
     let tx_hash = api.tx().sign_and_submit_default(&tx, &signer).await?;
     println!("Submitted tx with hash {tx_hash}");

examples/examples/multisig.rs

@@ -67,7 +67,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     );
 
     // Submit the extrinsic with default params:
-    let encoded = hex::encode(&api.tx().call_data(&tx)?);
+    let encoded = hex::encode(api.tx().call_data(&tx)?);
     println!("Call data: {encoded}");
     let tx_hash = api.tx().sign_and_submit_default(&tx, &signer).await?;
     println!("Submitted tx with hash {tx_hash}");

testing/integration-tests/src/frame/balances.rs

@@ -271,7 +271,7 @@ async fn storage_balance_lock() -> Result<(), subxt::Error> {
 
     let locks_addr = node_runtime::storage()
         .balances()
-        .locks(&AccountKeyring::Bob.to_account_id());
+        .locks(AccountKeyring::Bob.to_account_id());
 
     let locks = api.storage().fetch_or_default(&locks_addr, None).await?;