Add DB cleanup cell

Co-authored-by: Florentin Dörre <florentin.dorre@neotechnology.com>

Author: Mats-SX

examples/gds-sessions.ipynb

@@ -411,6 +411,20 @@
     "sessions.list()"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "tags": [
+     "teardown"
+    ]
+   },
+   "outputs": [],
+   "source": [
+    "# Lastly, let's clean up the database\n",
+    "gds.run_cypher(\"MATCH (n:Person|Fruit) DETACH DELETE n\")"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},