removed conflicting icon

source/RobotAPI/gui_plugins/HandUnitPlugin/HandUnitGuiPlugin.h

@@ -97,7 +97,6 @@ namespace armarx
         // inherited of ArmarXWidget
         virtual QString getWidgetName() const { return "RobotControl.HandUnitGUI"; }
         virtual QIcon getWidgetIcon() const { return QIcon("://icons/hand.svg"); }
-        virtual QIcon getWidgetCategoryIcon() const { return QIcon("://icons/hand.svg"); }
 
         QPointer<QDialog> getConfigDialog(QWidget* parent = 0);
         virtual void loadSettings(QSettings * settings);