RATIS-2346. SimpleStateMachineStorage prints too many log messages. (#1302)

diff --git a/ratis-server/src/main/java/org/apache/ratis/statemachine/impl/SimpleStateMachineStorage.java b/ratis-server/src/main/java/org/apache/ratis/statemachine/impl/SimpleStateMachineStorage.java
index 2552c33..0ca6734 100644
--- a/ratis-server/src/main/java/org/apache/ratis/statemachine/impl/SimpleStateMachineStorage.java
+++ b/ratis-server/src/main/java/org/apache/ratis/statemachine/impl/SimpleStateMachineStorage.java
@@ -227,7 +227,7 @@
     }
     try {
       final SingleFileSnapshotInfo latest = updateLatestSnapshot(findLatestSnapshot(dir.toPath()));
-      LOG.info("Latest snapshot is {} in {}", latest, dir);
+      LOG.debug("Latest snapshot is {} in {}", latest, dir);
       return latest;
     } catch (IOException e) {
       LOG.warn("Failed to updateLatestSnapshot from {}", dir, e);