score:1

Take a look at this custom code - it hides the last legend group element.

    events: {
        load() {
            const chart = this;
            const allLegendItems = chart.legend.allItems;
            
            allLegendItems[allLegendItems.length - 1].legendGroup.hide();
        }
    }

Demo: https://jsfiddle.net/BlackLabel/b40ysjgu/

API: https://api.highcharts.com/highcharts/chart.events.load


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