title: chartjs: How to remove specific label
body: <p>I have a Bar Chart with these data and options:</p>
  
  <pre><code>var data = {
      labels: periodnames,
      datasets: [          
          {
              yAxisID: "bar-stacked",
              data: rcash,
              backgroundColor: "#FFCE56",                  
              label:""
          },
      {
          yAxisID:"bar-stacked",
          data: pcash,
          backgroundColor: "#FFCE56",
          label: "cash"           
  
      }       
  
      ]
  
  };
  
  var options = {        
      animation: {
          animateScale: true
      },        
      scales: {
          xAxes: [{
          stacked: true,
      }],        
          yAxes: [ 
              {
                  display:false,
                  id: "line-axis",                  
  
              },
              {
              id: "bar-stacked",
              stacked: true,                
  
          }            
          ]
      }
  }
  
  finactivityGraphChart = new Chart(ctx, {
      type: 'bar',
      data: data,
      options: options
  });
  </code></pre>
  
  <p>The result chart is this:
  <a href="https://i.stack.imgur.com/8eTon.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8eTon.png" alt="enter image description here"></a></p>
  
  <p>My problem is that I don't want to show the first dataset's label. If I don't define it, it shows the yellow box with the value "undefine" next to it. I suppose that I must modify the Chart.js file. Any suggestions?</p>