title: Hiding Y2 axis labels in dygraphs does not reclaim space on the right side of the canvas
body: <p>How do I hide the Y2 axis on the canvas and reclaim the space when drawYAxis: false is set globally. The left and right side have labels hidden but ~ 50px of padding remain unclaimed in the right side of the graph.  The left side (Y1) is completely reclaimed as expected.</p>
  
  <pre><code>drawYAxis: false,
  series: {
                  'Altitude': {
                      axis: 'Y2',
                      drawYAxis: false &lt;-- this doesn't work.
                  }
          },
          axes: {
              x: {
                  axisLabelFormatter: xAxisLabelFormatter,
                  axisLabelFontSize: 12,
                  axisLabelColor: "#FFF"
              },
              y2: {
                  drawYAxis: false &lt;-- neither does this.
              }
          },
  </code></pre>