Fix rust 1.65 lints (#3682)

## Issue Addressed

New lints for rust 1.65

## Proposed Changes

Notable change is the identification or parameters that are only used in recursion

## Additional Info
na

testing/execution_engine_integration/src/transactions.rs

@@ -30,7 +30,7 @@ pub fn transactions<E: EthSpec>(account1: Address, account2: Address) -> Vec<Typ
         Transaction::DepositDepositContract {
             sender: account1,
             deposit_contract_address: ethers_core::types::Address::from_slice(
-                &hex::decode(&DEPOSIT_CONTRACT_ADDRESS).unwrap(),
+                &hex::decode(DEPOSIT_CONTRACT_ADDRESS).unwrap(),
             ),
         }
         .transaction::<E>(),