Remove setup.py references from pip anatomy docs

Author: sbidoul

docs/html/development/architecture/anatomy.rst

@@ -14,16 +14,14 @@ Repository anatomy & directory structure
 Root and tools
 ==============
 
-The ``README``, license, ``pyproject.toml``, ``setup.py``, and so on are in the top level.
+The ``README``, license, ``pyproject.toml``, and so on are in the top level.
 
 * ``AUTHORS.txt``
 * ``LICENSE.txt``
 * ``MANIFEST.in``
 * ``NEWS.rst``
 * ``pyproject.toml``
 * ``README.rst``
-* ``setup.cfg``
-* ``setup.py``
 * ``noxfile.py`` -- ``pip`` uses Nox, an automation tool, configured by this file. ``noxfile.py`` describes a few environments ``pip`` uses during development for simplifying how tests are run (complicated situation there). Example: ``nox -s lint``, ``nox -s test-3.10``. We can run tests for different versions of Python by changing “3.10” to “3.7” or similar.
 * ``.gitattributes``
 * ``.gitignore``