Delete trailing empty cell test

nbs/tutorials/tutorial.ipynb

@@ -1536,13 +1536,6 @@
     "\n",
     "It is worth taking a look at the documentation for [figures](https://quarto.org/docs/authoring/figures.html), [callouts](https://quarto.org/docs/authoring/callouts.html), [markdown](https://quarto.org/docs/authoring/markdown-basics.html), [widgets](https://quarto.org/docs/interactive/widgets/jupyter.html), [layouts](https://quarto.org/docs/interactive/layout.html), [conditional content](https://quarto.org/docs/authoring/conditional.html) and [quarto extensions](https://quarto.org/docs/extensions/) to name a few useful things we have encountered."
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {