minor code cleaning

AwtUtilities/src/main/java/fr/soleil/lib/project/awt/ColorUtils.java

@@ -61,8 +61,6 @@ public class ColorUtils {
             new Color(0, 220, 220), new Color(170, 100, 255), new Color(193, 160, 4) };
     private static final Color BRIGHTER = new Color(245, 245, 245);
 
-    private static final ColorUtils COLOR_ROTATOR = new ColorUtils();
-
     private LinkedList<Color> colorList;
     private int typeColor;
     private Color[] customColors;