Remove index.rst.

The actually used file is `Examples and Tutorials Index` in teh same
folder.

docs/source/examples/Notebook/rstversions/index.rst

@@ -1,37 +0,0 @@
-
-`View the original notebook on nbviewer <http://nbviewer.jupyter.org/github/jupyter/notebook/blob/master/docs/source/examples/Notebook/Examples%20and%20Tutorials%20Index.ipynb>`__
-
-
-
-Examples and Tutorials
-======================
-
-This portion of the documentation was generated from notebook files. You
-can download the original interactive notebook files using the links at
-the tops and bottoms of the pages.
-
-Tutorials
----------
-
-.. toctree::
-   :maxdepth: 1
-
-   What is the Jupyter Notebook
-   Notebook Basics
-   Running Code
-   Working With Markdown Cells
-   Custom Keyboard Shortcuts
-   JavaScript Notebook Extensions
-
-Examples
---------
-
-.. toctree::
-   :maxdepth: 1
-
-   Importing Notebooks
-   Connecting with the Qt Console
-   Typesetting Equations
-
-
-`View the original notebook on nbviewer <http://nbviewer.jupyter.org/github/jupyter/notebook/blob/master/docs/source/examples/Notebook/Examples%20and%20Tutorials%20Index.ipynb>`__