Tiny cleanups in preparation for persistent tower (#10805)

local-cluster/src/local_cluster.rs

@@ -185,7 +185,6 @@ impl LocalCluster {
         );
 
         let mut validators = HashMap::new();
-        error!("leader_pubkey: {}", leader_pubkey);
         let leader_info = ValidatorInfo {
             keypair: leader_keypair.clone(),
             voting_keypair: leader_voting_keypair,

local-cluster/tests/local_cluster.rs

@@ -830,6 +830,7 @@ fn test_snapshot_download() {
 #[test]
 #[serial]
 fn test_snapshot_restart_tower() {
+    solana_logger::setup();
     // First set up the cluster with 2 nodes
     let snapshot_interval_slots = 10;
     let num_account_paths = 2;