fix(db): remove trans-cache from checkpoint

Author: zhang0125

chainbase/src/main/java/org/tron/core/db2/core/SnapshotManager.java

@@ -7,14 +7,14 @@
 import com.google.common.util.concurrent.ListenableFuture;
 import com.google.common.util.concurrent.ListeningExecutorService;
 import com.google.common.util.concurrent.MoreExecutors;
-
 import java.io.File;
 import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
@@ -24,7 +24,6 @@
 import java.util.concurrent.locks.LockSupport;
 import java.util.stream.Collectors;
 import javax.annotation.PostConstruct;
-
 import lombok.Getter;
 import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
@@ -375,6 +374,12 @@ private void createCheckpoint() {
         }
 
         String dbName = db.getDbName();
+
+        if (Objects.equals(dbName, "trans-cache")) {
+          // trans-cache is deprecated
+          continue;
+        }
+
         Snapshot next = head.getRoot();
         for (int i = 0; i < flushCount; ++i) {
           next = next.getNext();