fix

Author: Caideyipi

integration-test/src/test/java/org/apache/iotdb/pipe/it/dual/treemodel/auto/basic/IoTDBPipeDataSinkIT.java

@@ -589,7 +589,8 @@ public void testTransferMods() {
         Collections.singleton("5,"));
 
     TestUtils.executeNonQueries(
-        senderEnv, Arrays.asList("drop pipe test_history", "drop pipe test_realtime"));
+        senderEnv,
+        Arrays.asList("drop pipe if exists test_history", "drop pipe if exists test_realtime"));
 
     TestUtils.executeNonQuery(receiverEnv, "drop database root.**");