Remove debug sysout

src/main/java/be/cylab/java/wowa/training/Trainer.java

@@ -191,7 +191,6 @@ public class Trainer {
             TrainingDataset tmp = new TrainingDataset();
             int alert_counter = 0;
             int no_alert_counter = 0;
-            System.out.println("Fold " + i);
             while (tmp.getLength() < (alert_number + no_alert_number)) {
                 int index = Utils.randomInteger(0, dataset.getLength() - 1);
                 if (dataset.getExpected().get(index) == 1