drop setuptools and wheel from shared libs

[graingert]

this would fix #951 and cause pip 23.1 to use the pep517 codepath for all packages

since 23.1 pip doesn't need wheel or setuptools anymore https://pip.pypa.io/en/stable/news/#v23-1

When the wheel package is not installed, pip now uses the default build backend instead of setup.py install and setup.py develop for project without pyproject.toml. (#8559)

setuptools was also removed from CPython 3.12's ensurepip: https://docs.python.org/3.12/whatsnew/3.12.html#removed

Remove the bundled setuptools wheel from ensurepip, and stop installing setuptools in environments created by venv.

[chrysle]

This would be a whole new concept! Only one shared libraries!

I agree this should be done and will take a look.