Remove blockhash from fee calculation (#20641)

core/src/test_validator.rs

@@ -577,7 +577,7 @@ impl TestValidator {
                 }
                 println!("Waiting for fees to stabilize {:?}...", num_tries);
                 match rpc_client.get_latest_blockhash() {
-                    Ok(blockhash) => match rpc_client.get_fee_for_message(&blockhash, &message) {
+                    Ok(_) => match rpc_client.get_fee_for_message(&message) {
                         Ok(fee) => {
                             if fee != 0 {
                                 break;