Use TransactionDriver 100% (#24420)

## Description 

Remove QuorumDriver integration in TransactionOrchestrator.

Remove the logic to split traffic between QuorumDriver and
TransactionDriver.

Remove SIP-39 simtest which has been rolled out.

## Test plan 

CI

Author: mwtian

crates/sui-benchmark/src/lib.rs

@@ -16,10 +16,7 @@ use sui_core::{
         QuorumDriver, QuorumDriverHandler, QuorumDriverHandlerBuilder, QuorumDriverMetrics,
         reconfig_observer::ReconfigObserver,
     },
-    transaction_driver::{
-        SubmitTransactionOptions, TransactionDriver, TransactionDriverMetrics,
-        choose_transaction_driver_percentage,
-    },
+    transaction_driver::{SubmitTransactionOptions, TransactionDriver, TransactionDriverMetrics},
     validator_client_monitor::ValidatorClientMetrics,
 };
 use sui_json_rpc_types::{
@@ -283,14 +280,13 @@ impl LocalValidatorAggregatorProxy {
             .with_registry(registry)
             .build_network_clients();
         let committee = genesis.committee().unwrap();
-        let td_percentage = choose_transaction_driver_percentage(None);
         Self::new_impl(
             aggregator,
             registry,
             reconfig_fullnode_rpc_url,
             clients,
             committee,
-            td_percentage,
+            100,
         )
         .await
     }

crates/sui-core/src/quorum_driver/mod.rs

@@ -808,6 +808,7 @@ where
         }
     }
 
+    #[cfg(test)]
     pub(crate) fn with_notifier(
         mut self,
         notifier: Arc<NotifyRead<TransactionDigest, QuorumDriverResult>>,

crates/sui-core/src/transaction_driver/mod.rs

@@ -95,6 +95,12 @@ where
         node_config: Option<&NodeConfig>,
         client_metrics: Arc<ValidatorClientMetrics>,
     ) -> Arc<Self> {
+        if std::env::var("TRANSACTION_DRIVER").is_ok() {
+            tracing::warn!(
+                "Transaction Driver is the only supported driver for transaction submission. Setting TRANSACTION_DRIVER is a no-op."
+            );
+        }
+
         let shared_swap = Arc::new(ArcSwap::new(authority_aggregator));
 
         // Extract validator client monitor config from NodeConfig or use default
@@ -486,28 +492,6 @@ where
     }
 }
 
-// Chooses the percentage of transactions to be driven by TransactionDriver.
-pub fn choose_transaction_driver_percentage(
-    chain_id: Option<sui_types::digests::ChainIdentifier>,
-) -> u8 {
-    if let Ok(v) = std::env::var("TRANSACTION_DRIVER")
-        && let Ok(tx_driver_percentage) = v.parse::<u8>()
-        && (0..=100).contains(&tx_driver_percentage)
-    {
-        return tx_driver_percentage;
-    }
-
-    if let Some(chain_identifier) = chain_id
-        && chain_identifier.chain() == sui_protocol_config::Chain::Unknown
-    {
-        // Kep test coverage for QD.
-        return 50;
-    }
-
-    // Default to 100% everywhere
-    100
-}
-
 // Inner state of TransactionDriver.
 struct State {
     tasks: JoinSet<()>,