Removing deprecated post-processing tutorial

docs/source/Post-processing.ipynb

@@ -11,7 +11,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "In this tutorial we demonstrate the functionality and posterior operations supported by the [PostProcessing](postprocessing.rst) module by operating with the example posterior samples found in ``examples/examples_fast/Outputs``. Make sure to run this first (`python examples/examples_fast/Modules.main.py`), to get all output files needed to execute this notebook. A previous version of this Post-processing tutorial operating with the posterior samples reported by [Riley et al. (2019)](https://ui.adsabs.harvard.edu/abs/2019ApJ...887L..21R/abstract) is given [here](https://github.com/xpsi-group/xpsi/blob/cff82f299da93ca97c84ffb34390ab077cc001b3/docs/source/postprocessing_tutorial.ipynb) with more post-processing examples (however, using model files which are not supported anymore)."
+    "In this tutorial we demonstrate the functionality and posterior operations supported by the [PostProcessing](postprocessing.rst) module by operating with the example posterior samples found in ``examples/examples_fast/Outputs``. Make sure to run this first (`python examples/examples_fast/Modules.main.py`), to get all output files needed to execute this notebook."
    ]
   },
   {