score:5

Accepted answer

you can hide the symbols using legend options:

legend: {
    symbolpadding: 0,
    symbolwidth: 0,
    symbolheight: 0,
    squaresymbol: false
},

highcharts.chart('container', {

  legend: {
    symbolpadding: 0,
    symbolwidth: 0,
    symbolheight: 0,
    squaresymbol: false
  },

  xaxis: {
    categories: ['jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug', 'sep', 'oct', 'nov', 'dec']
  },

  series: [{
    data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]
  }, {
    type: 'column',
    data: [95.6, 54.4, 29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1]
  }]
});
<script src="https://code.highcharts.com/highcharts.js"></script>
<div id="container" style="height: 400px"></div>

example: https://jsfiddle.net/blacklabel/b04woedh/1/

score:4

one workout is by giving .001 to hide symbol

 legend: {
   symbolheight: .001,
   symbolwidth: .001,
   symbolradius: .001
 },

jsfiddle

score:9

you can hide it simply using css.

this worked for me

square and circle:

.highcharts-legend-item rect{
    display:none;
}

line :

.highcharts-legend-item path {
    display: none;
}

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