fix double cell in advanced_indexing (#249)

* fix double cell in advanced_indexing

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---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: HoWol76

intermediate/indexing/advanced-indexing.ipynb

@@ -107,18 +107,6 @@
     "da.sel(lat=target_lat, lon=target_lon, method=\"nearest\")  # -- orthogonal indexing"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "target_lat = xr.DataArray([31, 41, 42, 42], dims=\"degrees_north\")\n",
-    "target_lon = xr.DataArray([200, 201, 202, 205], dims=\"degrees_east\")\n",
-    "\n",
-    "da.sel(lat=target_lat, lon=target_lon, method=\"nearest\")  # -- orthogonal indexing"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},