Renamed method in MapApplication

The method should be called runRemove2 because it is remove(int).

src/main/java/se/lth/cs/MapApplication.java

@@ -67,7 +67,7 @@ public class MapApplication  extends Application<Map<Integer, Integer>> {
         dataStructure.putAll(argument);
     }
 
-    public Integer runRemove3() {
+    public Integer runRemove2() {
         return dataStructure.remove(generateIndex()); }
 
     public int runSize() { return dataStructure.size(); }