diff --git a/htdocs/samples/chart_gauge.html b/htdocs/samples/chart_gauge.html
deleted file mode 100644
index 4c37582..0000000
--- a/htdocs/samples/chart_gauge.html
+++ /dev/null
@@ -1,48 +0,0 @@
-<html>
-  <head>
-    <link rel="stylesheet" type="text/css" href="/css/c3.css">
-  </head>
-  <body>
-    <div id="chart"></div>
-
-    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
-    <script src="/js/c3.js"></script>
-    <script>
-
-var gauge_fuellevel = c3.generate({
-    data: {
-      columns: [
-        [ '%', 81.4 ] 
-      ],
-      type: 'gauge'
-    },
-    gauge: {
-//      color: '', // default value is a grey. "color: '', " is no background.
-      label: {
-        format: function(value, ratio) {
-          return value; 
-        },
-//        show: false // to turn off the min/max labels.
-      },
-      min: 0,//can handle negative min e.g. vacuum / voltage / current flow / rate of change
-      max: 100,
-      style: 'arc', // Only style currently.
-      units: ' %',
-//      width: 39 // for adjusting arc thickness
-    },
-    legend: {
-      show: false
-    },
-    size: {
-      height: 240,
-      width: 240
-    },
-    color: {
-      pattern: ['#FF0000', '#F6C600', '#60B044'], // the three color levels for the percentage values.
-      values: ['percentage', 30, 60, 90] // alternate first value is 'value'
-    }
-  });
-
-    </script>
-  </body>
-</html>
