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diff --git a/www/lib/vis/examples/network/layout/hierarchicalLayoutUserdefined.html b/www/lib/vis/examples/network/layout/hierarchicalLayoutUserdefined.html
deleted file mode 100644
index de536e54..00000000
--- a/www/lib/vis/examples/network/layout/hierarchicalLayoutUserdefined.html
+++ /dev/null
@@ -1,152 +0,0 @@
-<!doctype html>
-<html>
-<head>
-    <title>Network | Hierarchical Layout, userDefined</title>
-
-    <style type="text/css">
-        body {
-            font: 10pt sans;
-        }
-
-        #mynetwork {
-            width: 600px;
-            height: 600px;
-            border: 1px solid lightgray;
-        }
-    </style>
-    <script type="text/javascript" src="../../../dist/vis.js"></script>
-    <link href="../../../dist/vis-network.min.css" rel="stylesheet" type="text/css"/>
-
-
-    <script type="text/javascript">
-        var nodes = null;
-        var edges = null;
-        var network = null;
-        var directionInput = document.getElementById("direction");
-
-        function destroy() {
-            if (network !== null) {
-                network.destroy();
-                network = null;
-            }
-        }
-
-        function draw() {
-            destroy();
-            nodes = [];
-            edges = [];
-            var connectionCount = [];
-
-            // randomly create some nodes and edges
-            for (var i = 0; i < 15; i++) {
-                nodes.push({id: i, label: String(i)});
-            }
-            edges.push({from: 0, to: 1});
-            edges.push({from: 0, to: 6});
-            edges.push({from: 0, to: 13});
-            edges.push({from: 0, to: 11});
-            edges.push({from: 1, to: 2});
-            edges.push({from: 2, to: 3});
-            edges.push({from: 2, to: 4});
-            edges.push({from: 3, to: 5});
-            edges.push({from: 1, to: 10});
-            edges.push({from: 1, to: 7});
-            edges.push({from: 2, to: 8});
-            edges.push({from: 2, to: 9});
-            edges.push({from: 3, to: 14});
-            edges.push({from: 1, to: 12});
-            nodes[0]["level"] = 0;
-            nodes[1]["level"] = 1;
-            nodes[2]["level"] = 3;
-            nodes[3]["level"] = 4;
-            nodes[4]["level"] = 4;
-            nodes[5]["level"] = 5;
-            nodes[6]["level"] = 1;
-            nodes[7]["level"] = 2;
-            nodes[8]["level"] = 4;
-            nodes[9]["level"] = 4;
-            nodes[10]["level"] = 2;
-            nodes[11]["level"] = 1;
-            nodes[12]["level"] = 2;
-            nodes[13]["level"] = 1;
-            nodes[14]["level"] = 5;
-
-
-            // create a network
-            var container = document.getElementById('mynetwork');
-            var data = {
-                nodes: nodes,
-                edges: edges
-            };
-
-            var options = {
-                edges: {
-                    smooth: {
-                        type: 'cubicBezier',
-                        forceDirection: (directionInput.value == "UD" || directionInput.value == "DU") ? 'vertical' : 'horizontal',
-                        roundness: 0.4
-                    }
-                },
-                layout: {
-                    hierarchical: {
-                        direction: directionInput.value
-                    }
-                },
-                physics:false
-            };
-            network = new vis.Network(container, data, options);
-
-            // add event listeners
-            network.on('select', function (params) {
-                document.getElementById('selection').innerHTML = 'Selection: ' + params.nodes;
-            });
-        }
-
-    </script>
-    <script src="../../googleAnalytics.js"></script>
-</head>
-
-<body onload="draw();">
-<h2>Hierarchical Layout - User-defined</h2>
-
-<div style="width:700px; font-size:14px; text-align: justify;">
-    This example shows a user-defined hierarchical layout. If the user defines levels for nodes but does not do so for
-    all nodes, an alert will show up and hierarchical layout will be disabled. Either all or none can be defined.
-    If the smooth curves appear to be inverted, the direction of the edge is not in the same direction as the network.
-</div>
-<p>
-    <input type="button" id="btn-UD" value="Up-Down">
-    <input type="button" id="btn-DU" value="Down-Up">
-    <input type="button" id="btn-LR" value="Left-Right">
-    <input type="button" id="btn-RL" value="Right-Left">
-    <input type="hidden" id='direction' value="UD">
-</p>
-
-<div id="mynetwork"></div>
-
-<p id="selection"></p>
-<script language="JavaScript">
-    var directionInput = document.getElementById("direction");
-    var btnUD = document.getElementById("btn-UD");
-    btnUD.onclick = function () {
-        directionInput.value = "UD";
-        draw();
-    };
-    var btnDU = document.getElementById("btn-DU");
-    btnDU.onclick = function () {
-        directionInput.value = "DU";
-        draw();
-    };
-    var btnLR = document.getElementById("btn-LR");
-    btnLR.onclick = function () {
-        directionInput.value = "LR";
-        draw();
-    };
-    var btnRL = document.getElementById("btn-RL");
-    btnRL.onclick = function () {
-        directionInput.value = "RL";
-        draw();
-    };
-</script>
-</body>
-</html>