fix

Author: Caideyipi

integration-test/src/test/java/org/apache/iotdb/pipe/it/single/IoTDBPipeOPCUAIT.java

@@ -48,8 +48,6 @@
 import org.junit.Test;
 import org.junit.experimental.categories.Category;
 import org.junit.runner.RunWith;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.net.ConnectException;