refactor: rm unused code (#4045)

Author: dl239

java/openmldb-common/src/main/java/com/_4paradigm/openmldb/common/codec/RowView.java

@@ -18,7 +18,6 @@
 
 import com._4paradigm.openmldb.proto.Type.DataType;
 import com._4paradigm.openmldb.proto.Common.ColumnDesc;
-import org.joda.time.DateTime;
 
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;

java/openmldb-taskmanager/src/main/scala/com/_4paradigm/openmldb/taskmanager/JobInfoManager.scala

@@ -46,7 +46,6 @@ object JobInfoManager {
   option.setZkCluster(TaskManagerConfig.getZkCluster)
   option.setZkPath(TaskManagerConfig.getZkRootPath)
   option.setUser(TaskManagerConfig.getUser)
-  option.setPassword(TaskManagerConfig.getPassword)
 
   if (!TaskManagerConfig.getPassword.isEmpty) {
     option.setPassword(TaskManagerConfig.getPassword)