JAVASCRIPT

chart js hide legend

var myChart = new Chart(ctx, {
   type: 'line',
   data: data,
   options: {
      legend: {
         display: false //This will do the task
      }
   }
});

chartjs remove legend

// It's now in plugins options
// See at https://www.chartjs.org/docs/latest/configuration/legend.html

const myChart = new Chart(ctx, {
   type: 'line',
   data: data,
   options: {
     plugins: {
       legend: {
         display: false
       }
     }
   }
})