[Chartjs]-Disable or hide YAixs of chart in chartJs

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Within the chart options you can define if the yAxis is displayed or not.

options: {  
    ...
    scales: {
      yAxes: [{
        display: false
      }]
    }
  }

Please check the following runnable code snippet.

var lineChartData = {
  labels: ["FEBRUARY", "MARCH", "APRIL", "MAY", "JUNE", "JULY", "AUGUST", "SEPTEMBER", "OCTOBER", "NOVEMBER", "DECEMBER", "JANUARY", "FEBRUARY", "MARCH", "APRIL"],
  datasets: [{
    label: "X",
    fillColor: "#ff1e6d",
    strokeColor: "#ff1e6d",
    pointColor: "#ff1e6d",
    data: [290, 390, 300, 440, 625, 375, 390, 325, 280, 295, 385, 295, 485, 280, 265]
  }, {
    label: "Y",
    fillColor: "#ffc000",
    strokeColor: "rgba(220,180,0,1)",
    pointColor: "#ffc000",
    data: [190, 200, 420, 390, 150, 250, 160, 155, 200, 260, 240, 500, 300, 210, 230, 270]
  }]
}

Chart.defaults.global.animationSteps = 50;
Chart.defaults.global.tooltipYPadding = 0;
Chart.defaults.global.tooltipCornerRadius = 0;
Chart.defaults.global.tooltipTitleFontStyle = "normal";
Chart.defaults.global.tooltipFillColor = "rgba(0,160,0,0.8)";
Chart.defaults.global.animationEasing = "easeOutBounce";
Chart.defaults.global.responsive = true;
Chart.defaults.global.scaleLineColor = "#816cab";
Chart.defaults.global.scaleFontSize = 11;
Chart.defaults.global.scaleFontColor = "white";

new Chart(document.getElementById("fill"), {
  type: 'line',
  data: lineChartData,
  options: {  
    pointDotRadius: 0,
    bezierCurve: true,
    scaleShowVerticalLines: false,
    scaleGridLineColor: "transparent",
    scales: {
      yAxes: [{
        display: false
      }]
    }
  }
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.min.js"></script>
<canvas id="fill"></canvas>

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