Remove useless method in interfaces.

src/main/org/insa/graphics/drawing/BasicGraphPalette.java

@@ -13,16 +13,6 @@ public class BasicGraphPalette implements GraphPalette {
     private static final Color SMALL_ROAD_COLOR = new Color(255, 234, 0);
     private static final Color COASTLINE_COLOR = Color.BLUE;
 
-    @Override
-    public int getDefaultPointWidth() {
-        return 2;
-    }
-
-    @Override
-    public Color getDefaultPointColor() {
-        return Color.GREEN;
-    }
-
     @Override
     public Color getColorForArc(Arc arc) {
         RoadType type = arc.getRoadInformation().getType();

src/main/org/insa/graphics/drawing/BlackAndWhiteGraphPalette.java

@@ -10,11 +10,6 @@ public class BlackAndWhiteGraphPalette extends BasicGraphPalette {
     private final static Color[] ROAD_COLOR_FROM_WIDTH = { null, new Color(140, 140, 140),
             new Color(80, 80, 80), new Color(40, 40, 40), new Color(30, 30, 30) };
 
-    @Override
-    public Color getDefaultPointColor() {
-        return Color.BLACK;
-    }
-
     @Override
     public Color getColorForArc(Arc arc) {
         int width = getWidthForArc(arc);

src/main/org/insa/graphics/drawing/GraphPalette.java

@@ -6,16 +6,6 @@ import org.insa.graph.Arc;
 
 public interface GraphPalette {
 
-    /**
-     * @return The default point width for this palette.
-     */
-    public int getDefaultPointWidth();
-
-    /**
-     * @return The default point color for this palette.
-     */
-    public Color getDefaultPointColor();
-
     /**
      * @param arc Arc for which color should be retrieved.
      *