Remove defunct info from README

Author: Gadgetoid

README.rst

@@ -30,33 +30,6 @@ Please ensure all dependencies are available on the CircuitPython filesystem.
 This is easily achieved by downloading
 `the Adafruit library and driver bundle <https://circuitpython.org/libraries>`_.
 
-Installing from PyPI
-=====================
-.. note:: This library is not available on PyPI yet. Install documentation is included
-   as a standard element. Stay tuned for PyPI availability!
-
-On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally `from
-PyPI <https://pypi.org/project/adafruit-circuitpython-mics6814/>`_. To install for current user:
-
-.. code-block:: shell
-
-    pip3 install adafruit-circuitpython-mics6814
-
-To install system-wide (this may be required in some cases):
-
-.. code-block:: shell
-
-    sudo pip3 install adafruit-circuitpython-mics6814
-
-To install in a virtual environment in your current project:
-
-.. code-block:: shell
-
-    mkdir project-name && cd project-name
-    python3 -m venv .env
-    source .env/bin/activate
-    pip3 install adafruit-circuitpython-mics6814
-
 Usage Example
 =============
 
@@ -86,8 +59,3 @@ Contributing
 Contributions are welcome! Please read our `Code of Conduct
 <https://github.com/pimoroni/Pimoroni_CircuitPython_MICS6814/blob/master/CODE_OF_CONDUCT.md>`_
 before contributing to help this project stay welcoming.
-
-Documentation
-=============
-
-For information on building library documentation, please check out `this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>`_.