Fix cell output

Signed-off-by: Itay Dafna <[email protected]>

Author: ibdafna

examples/Nested Hierarchies.ipynb

@@ -11,25 +11,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "id": "ultimate-supply",
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "application/vnd.jupyter.widget-view+json": {
-       "model_id": "31962ad4cb6444afb7ce9f19ed7b384f",
-       "version_major": 2,
-       "version_minor": 0
-      },
-      "text/plain": [
-       "DataGrid(base_column_header_size=35, base_column_size=80, base_row_header_size=80, default_renderer=TextRender…"
-      ]
-     },
-     "metadata": {},
-     "output_type": "display_data"
-    }
-   ],
+   "outputs": [],
    "source": [
     "import ipydatagrid as ipg\n",
     "import pandas as pd\n",