Bug 312761 It makes no difference changing the series labels position in Radar chart.[13]
chart/org.eclipse.birt.chart.ui/src/org/eclipse/birt/chart/ui/util/ChartUIUtil.java
* 
	 * @param chartModel
	 *            chart model
	 * @param removedAxisNumber
	 *            the number of axes to be removed
	 */
	public static void removeLastAxes( ChartWithAxes chartModel,
			int removedAxisNumber )
	{
		for ( int i = 0; i < removedAxisNumber; i++ )
		{
			removeLastAxis( chartModel );
		}
	}
	/**
	 * Removes the last orthogonal axis. Ensures only one event is fired.
	 * 
	 * @param chartModel
	 *            chart model
	 */
	public static void removeLastAxis( ChartWithAxes chartModel )
	{
		removeAxis( chartModel, getOrthogonalAxisNumber( chartModel ) - 1 );
	}
	/**
	 * Removes an orthogonal axis in the specified position. Ensures only one
	 * event is fired.
	 * 
	 * @param chartModel
	 *            chart model