合并1.8_3.10.x ==> 1.10_dev

Author: xuchao

rdb/rdb-sink/src/main/java/com/dtstack/flink/sql/sink/rdb/format/JDBCUpsertOutputFormat.java

@@ -33,9 +33,7 @@
 import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
-import java.sql.ResultSet;
 import java.sql.SQLException;
-import java.sql.Statement;
 import java.util.List;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.ScheduledFuture;