SSDM-7430: Compile error in Monitor fixed

datastore_server/source/java/ch/ethz/sis/openbis/generic/server/dss/plugins/sync/harvester/synchronizer/util/Monitor.java

@@ -22,10 +22,6 @@ import org.apache.commons.lang3.time.StopWatch;
 import org.apache.log4j.Logger;
 
 import ch.systemsx.cisd.common.filesystem.FileUtilities;
-import ch.systemsx.cisd.common.logging.BufferedAppender;
-import ch.systemsx.cisd.common.logging.LogCategory;
-import ch.systemsx.cisd.common.logging.LogFactory;
-import ch.systemsx.cisd.openbis.util.LogRecordingUtils;
 
 /**
  * @author Franz-Josef Elmer