Remove deprecated `distutils` dependency (PEP 632)

[NonlinearFruit]

distutils is deprecated in Python 3.10+ (source).

It seems on the only place that references it is in setup.py (source)

from distutils.command.install_scripts import install_scripts

The migration advice (source) recommends setuptools as the best alternative for distutils.command but it also looks like the references to install_scripts have been commented out (source) so the import might not be necessary