fix code

Author: Liu Zhengyun

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

@@ -38,6 +38,7 @@
 import java.sql.Statement;
 
 import static org.apache.iotdb.ainode.utils.AINodeTestUtils.BUILTIN_MODEL_MAP;
+import static org.apache.iotdb.ainode.utils.AINodeTestUtils.errorTest;
 
 @RunWith(IoTDBTestRunner.class)
 @Category({AIClusterIT.class})