Python wheel shouldn't be demanded for local bulids from source via setuptools

[alerque]

See previous iterations of this issue on other projects for details:

• Something is amiss with this dependency googlefonts/glyphsLib#701
• Should not require wheel to run setuptools locally fonttools/ufoLib2#156
• Remove wheel from setup_requires typemytype/booleanOperations#63

This one I'm even less sure how to go about fixing because a different shim to setuptools seems to be used, but here's the bit of code:

ufoNormalizer/pyproject.toml

Line 2 in 6d2e69c

requires = ["setuptools>=42", "wheel", "setuptools_scm[toml]>=3.4"]

[benkiel]

Happy to review a PR for this, unfortunately I don’t currently have the bandwidth to dig into this.