♻️📝 do not run search space visualization as part of docs build

given how the output was never displayed correctly anyways, this might as well be removed from the docs. That way, we do not need graphviz as well.

Signed-off-by: burgholzer <[email protected]>

docs/Mapping.ipynb

@@ -265,36 +265,6 @@
     "\n",
     "qc_mapped_w_teleport.draw(output=\"mpl\")"
    ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### Visualizing search graphs\n",
-    "\n",
-    "For deeper insight into a specific mapping process one can visualize the search graphs generated during heuristic mapping."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "from mqt.qmap import compile  # noqa: A004\n",
-    "from mqt.qmap.visualization import SearchVisualizer\n",
-    "\n",
-    "visualizer = SearchVisualizer()\n",
-    "qc_mapped, res = compile(qc, arch, method=\"heuristic\", visualizer=visualizer)\n",
-    "visualizer.visualize_search_graph()"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "There exist a wide range of customizations for these visualizations. Please refer to the [reference documentation](library/Visualization.rst) for more information."
-   ]
   }
  ],
  "metadata": {