removes docs building section from CONTRIBUTING.rst

CONTRIBUTING.rst

@@ -222,40 +222,6 @@ are rewritten.
    $ git push origin my-branch -f
 
 
-Building Documentation
-----------------------
-
-.. note::
-
-  ``sphinx`` and ``sphinx_rtd_theme`` are non-standard dependencies that can be installed
-  by running ``pip install -e . -r docs-requirements.txt`` from the project directory.
-
-
-.. _Read The Docs: https://nucypher.readthedocs.io/en/latest/
-
-Documentation for ``nucypher`` is hosted on `Read The Docs`_, and is automatically built without intervention by following the release procedure.
-However, you may want to build the documentation html locally for development.
-
-To build the project dependencies locally on Linux:
-
-.. code:: bash
-
-    (nucypher)$ make docs
-
-or on MacOS:
-
-.. code:: bash
-
-    (nucypher)$ make mac-docs
-
-If the build is successful, the resulting local documentation homepage, ``nucypher/docs/build/html/index.html``, will
-be automatically opened in the web browser.
-
-.. note::
-
-    If you would rather not have the homepage automatically opened, then run ``make build-docs`` instead.
-
-
 Building Docker
 ---------------