Remove universal support on the wheel

[ericwb]

Now that Bandit is Py3 only, it should be considered a "Pure-Python
Wheel" instead of a "Universal". Further information can be found
here: https://realpython.com/python-wheels/#specifying-a-universal-wheel

Fixes #654

Signed-off-by: Eric Brown browne@vmware.com

[lukehinds]

LGTM, I will let you merge as you may have some sort of merge order in mind.

[sigmavirus24]

I'm 90% certain we actually want to keep this as this tells pip that this is "universal" for all versions of Python 3 we support

[sigmavirus24]

PyCQA/pyflakes#597 (comment) gives me that 90% certainty and 10% uncertainty

[ericwb]

PyCQA/pyflakes#597 (comment) gives me that 90% certainty and 10% uncertainty

According to https://realpython.com/python-wheels/#different-types-of-wheels, this is still considered a pure python wheel, just one that doesn't support py2.

A universal wheel contains py2.py3-none-any.whl. It supports both Python 2 and Python 3 on any OS and 
platform. The majority of wheels listed on the Python Wheels website are universal wheels.

A pure-Python wheel contains either py3-none-any.whl or py2.none-any.whl. It supports either Python 3 or 
Python 2, but not both. It’s otherwise the same as a universal wheel, but it’ll be labeled with either py2 or py3 
rather than the py2.py3 label.

[sigmavirus24]

Looking at https://packaging.python.org/guides/distributing-packages-using-setuptools/#pure-python-wheels you do appear to be correct. I've found enough misinformation on realpython.com to not trust it