[Chartjs]-How to remove numbering on PolarArea circles?

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These are the ticks on the linear radial axis. They can be removed by setting the scale.ticks.display option to false.

Example:

new Chart(document.getElementById("chart"), {
  type: "polarArea",
  data: {
    labels: ["a", "b", "c"],
    datasets: [{
      data: [10, 20, 30]
    }]
  },
  options: {
    scale: {
      ticks: {
        display: false
      }
    }
  }
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.min.js"></script>
<canvas id="chart"></canvas>

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