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--- a/src/net/timbusproject/extractors/utils/ArchiUtils.java
+++ b/src/net/timbusproject/extractors/utils/ArchiUtils.java
@@ -9,9 +9,6 @@
 import net.sf.taverna.t2.activities.stringconstant.StringConstantActivity;
 import net.sf.taverna.t2.workflowmodel.Processor;
 import net.sf.taverna.t2.workflowmodel.processor.activity.Activity;
-
-import org.apache.log4j.LogManager;
-import org.apache.log4j.Logger;
 
 import uk.ac.bolton.archimate.model.FolderType;
 import uk.ac.bolton.archimate.model.IAccessRelationship;
@@ -28,9 +25,7 @@
 
 public class ArchiUtils {
 
-    private static Logger LOGGER = LogManager.getLogger(ArchiUtils.class.getName());
-
-    /**
+     /**
      * Group {@link IArchimateElement}s which have a relation of type {@link IAccessRelationship} between a source and a
      * target element
      * 
@@ -55,7 +50,7 @@
 
                     if (elementsInBetween.size() > 0) {
 
-                        ArrayList<IArchimateElement> key = new ArrayList<>();
+                        ArrayList<IArchimateElement> key = new ArrayList<IArchimateElement>();
                         key.add(source);
                         key.add(target);
                         map.put(key, elementsInBetween);
@@ -243,7 +238,7 @@
     public static void redirectRelations(IArchimateElement parent, IArchimateElement source, IArchimateElement target,
             List<IArchimateElement> childs, List<IRelationship> relations) {
 
-        List<IRelationship> markedToRemove = new ArrayList<>();
+        List<IRelationship> markedToRemove = new ArrayList<IRelationship>();
         for (IRelationship relation : relations) {
 
             for (IArchimateElement _target : childs) {
@@ -337,14 +332,4 @@
         return elements;
     }
 
-    public static void main(String[] args) {
-        IArchimateModel model = IArchimateFactory.eINSTANCE.createArchimateModel();
-        model.setDefaults();
-        model.setName("Test");
-        IFolder infrastructureFolder = model.getFolder(FolderType.TECHNOLOGY);
-        List<IArtifact> list = new ArrayList<IArtifact>();
-        final IArtifact x = initElement(IArchimateFactory.eINSTANCE.createArtifact(), "name", infrastructureFolder,
-                list);
-    }
-
 }