Fix CI bug

Author: CRZbulabula

integration-test/src/test/java/org/apache/iotdb/ainode/it/AINodeModelManageIT.java

@@ -79,6 +79,7 @@ public void userDefinedModelManagementTestInTree() throws SQLException, Interrup
           statement,
           "create model origin_chronos using uri \"file:///data/chronos2_origin\"",
           "1505: 't5' is already used by a Transformers config, pick another name.");
+      statement.execute("drop model origin_chronos");
     }
   }
 
@@ -94,6 +95,7 @@ public void userDefinedModelManagementTestInTable() throws SQLException, Interru
           statement,
           "create model origin_chronos using uri \"file:///data/chronos2_origin\"",
           "1505: 't5' is already used by a Transformers config, pick another name.");
+      statement.execute("drop model origin_chronos");
     }
   }