invalid "vmax" option (follow-up to plotly#183)

Author: paulovieira

_posts/plotly_js/financial/indicator1/2019-07-29-above-other-traces.html

@@ -15,7 +15,6 @@
     mode: "number+delta",
     value: 492,
     delta: { reference: 512, valueformat: ".0f" },
-    vmax: 500,
     domain: { y: [0, 1], x: [0.25, 0.75] },
     title: { text: "Users online" }
   },
@@ -25,4 +24,4 @@
 ];
 
 var layout = { width: 600, height: 450, xaxis: { range: [0, 62] } };
-Plotly.newPlot('myDiv', data, layout);
+Plotly.newPlot('myDiv', data, layout);