do not show graph and avoid graphviz dependency

Author: nvaytet

docs/wfm-stitching.ipynb

@@ -425,21 +425,12 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "d3c6cb34-cebe-43c3-8253-574fbad9b790",
+   "id": "dbb79512-efbc-4f9c-92e4-e1125f18b07f",
    "metadata": {},
    "outputs": [],
    "source": [
+    "# Make a coordinate transformation graph to compute wavelength from tof\n",
     "graph = {**beamline(scatter=True), **elastic(\"tof\")}\n",
-    "sc.show_graph(graph, simplified=True)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "78a5c3fc-3454-42b2-9874-4d0069d69a9e",
-   "metadata": {},
-   "outputs": [],
-   "source": [
     "wav_naive = tofs.transform_coords(\"wavelength\", graph=graph)\n",
     "wav_naive.hist(wavelength=300).plot()"
    ]