Removed empty cells from end of notebook

Author: eblur

tutorials/notebooks/color-excess/color-excess.ipynb

@@ -833,28 +833,6 @@
     "\n",
     "Note that the photometric extinction changes because the filter transmission is not uniform. The observed throughput of the filter depends on the shape of the background source flux."
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "colab": {},
-    "colab_type": "code",
-    "id": "o0A1N-XO8JF-"
-   },
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "colab": {},
-    "colab_type": "code",
-    "id": "LVi-JDo8Qdi8"
-   },
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {