diff --git a/docs/examples/packed-bubble.vg.json b/docs/examples/packed-bubble.vg.json
deleted file mode 100644
index 160f86eda6..0000000000
--- a/docs/examples/packed-bubble.vg.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "$schema": "https://vega.github.io/schema/vega/v5.json",
-  "width": 800,
-  "height": 500,
-  "padding": {"left": 5, "right": 5, "top": 20, "bottom": 0},
-  "autosize": "none",
-  "signals": [
-    {"name": "cx", "update": "width / 2"},
-    {"name": "cy", "update": "height / 2"},
-    {
-      "name": "gravityX",
-      "value": 0.2,
-      "bind": {"input": "range", "min": 0, "max": 1}
-    },
-    {
-      "name": "gravityY",
-      "value": 0.1,
-      "bind": {"input": "range", "min": 0, "max": 1}
-    }
-  ],
-  "data": [
-    {
-      "name": "table",
-      "values": [
-        {"category": "A", "amount": 0.28},
-        {"category": "B", "amount": 0.55},
-        {"category": "C", "amount": 0.43},
-        {"category": "D", "amount": 0.91},
-        {"category": "E", "amount": 0.81},
-        {"category": "F", "amount": 0.53},
-        {"category": "G", "amount": 0.19},
-        {"category": "H", "amount": 0.87},
-        {"category": "I", "amount": 0.28},
-        {"category": "J", "amount": 0.55},
-        {"category": "K", "amount": 0.43},
-        {"category": "L", "amount": 0.91},
-        {"category": "M", "amount": 0.81},
-        {"category": "N", "amount": 0.53},
-        {"category": "O", "amount": 0.19},
-        {"category": "P", "amount": 0.87}
-      ]
-    }
-  ],
-  "scales": [
-    {
-      "name": "size",
-      "domain": {"data": "table", "field": "amount"},
-      "range": [100, 3000]
-    },
-    {
-      "name": "color",
-      "type": "ordinal",
-      "domain": {"data": "table", "field": "category"},
-      "range": "ramp"
-    }
-  ],
-  "marks": [
-    {
-      "name": "nodes",
-      "type": "symbol",
-      "from": {"data": "table"},
-      "encode": {
-        "enter": {
-          "fill": {"scale": "color", "field": "category"},
-          "xfocus": {"signal": "cx"},
-          "yfocus": {"signal": "cy"}
-        },
-        "update": {
-          "size": {"signal": "pow(2 * datum.amount, 2)", "scale": "size"},
-          "stroke": {"value": "white"},
-          "strokeWidth": {"value": 1},
-          "tooltip": {"signal": "datum"}
-        }
-      },
-      "transform": [
-        {
-          "type": "force",
-          "iterations": 100,
-          "static": false,
-          "forces": [
-            {
-              "force": "collide",
-              "iterations": 2,
-              "radius": {"expr": "sqrt(datum.size) / 2"}
-            },
-            {"force": "center", "x": {"signal": "cx"}, "y": {"signal": "cy"}},
-            {"force": "x", "x": "xfocus", "strength": {"signal": "gravityX"}},
-            {"force": "y", "y": "yfocus", "strength": {"signal": "gravityY"}}
-          ]
-        }
-      ]
-    },
-    {
-      "type": "text",
-      "from": {"data": "nodes"},
-      "encode": {
-        "enter": {
-          "align": {"value": "center"},
-          "baseline": {"value": "middle"},
-          "fontSize": {"value": 15},
-          "fontWeight": {"value": "bold"},
-          "fill": {"value": "white"},
-          "text": {"field": "datum.category"}
-        },
-        "update": {"x": {"field": "x"}, "y": {"field": "y"}}
-      }
-    }
-  ]
-}