refactor: delete duplicate code (#2748)

client-adapter/common/src/main/java/com/alibaba/otter/canal/client/adapter/support/MessageUtil.java

@@ -38,7 +38,6 @@ public class MessageUtil {
             CanalEntry.EventType eventType = rowChange.getEventType();
 
             final Dml dml = new Dml();
-            dml.setIsDdl(rowChange.getIsDdl());
             dml.setDestination(destination);
             dml.setGroupId(groupId);
             dml.setDatabase(entry.getHeader().getSchemaName());

connector/core/src/main/java/com/alibaba/otter/canal/connector/core/util/MessageUtil.java

@@ -42,7 +42,6 @@ public class MessageUtil {
             CanalEntry.EventType eventType = rowChange.getEventType();
 
             final CommonMessage msg = new CommonMessage();
-            msg.setIsDdl(rowChange.getIsDdl());
             msg.setDatabase(entry.getHeader().getSchemaName());
             msg.setTable(entry.getHeader().getTableName());
             msg.setType(eventType.toString());