Fix typo issue

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

@@ -80,7 +80,7 @@ public final class Example {
 
         for (int i = 0; i < solutions.size(); i++) {
             System.out.println(solutions.get(i));
-            System.out.println(solutions.get(i).computeAUC(
+            System.out.println("AUC Value for fold" + i + solutions.get(i).computeAUC(
                     data_file,
                     expected_file));
         }

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

 package be.cylab.java.wowa.training;
 
 
-import be.cylab.java.roc.Roc;
-
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -122,7 +120,6 @@ public class Trainer {
                     dataset_increased.getExpected());
             solutions.add(sol);
         }
-        Roc roc = new Roc()
         return  solutions;
 
     }