How to remove the line/rule of an axis in Chart.js?

I found a way to remove this line. It's actually called the border of the axis and there's an option for it, see "Grid Line Configuration":

scales: {
    yAxes: [{
        gridLines: {
            drawBorder: false,
        }
    }]
}

This should work

 options: {
     scales: {
          yAxes: [{
               gridLines: {
                  display: false,
              }
          }]
     },
  }