Don't upload eggs to PyPI

[John Hagen]

Currently the latest release of SchemDraw has schemdraw-0.10-py3.9.egg uploaded to it: https://pypi.org/project/schemdraw/0.10/#files

.egg files have been superseded by wheels for many years and there is no longer any reason to upload them.

For more information, see https://packaging.python.org/discussions/wheel-vs-egg/

[cdelker]

No egg in 0.11.