Remove description-file field from setup.cfg

[jenshnielsen]

While installing from source I noticed that this deprecation warning was triggered.

C:\Users\Jens\miniconda3\envs\ipycytoscapedev\lib\site-packages\setuptools\dist.py:717: UserWarning: Usage of dash-separated 'description-file' will not be supported in future versions. Please use the underscore name 'description_file' instead
  warnings.warn(

The use of description-file/description_file has no effect when using setuptools https://setuptools.pypa.io/en/latest/userguide/declarative_config.html#compatibility-with-other-tools for supported In the form of description-file it triggers a deprecation warning while the other form will just be ignored. The readme is already included via long_description in setup.py so I would suggest removing this line

[github-actions[bot]]

:point_left: Launch a binder notebook on branch _jenshnielsen/ipycytoscape/fix_deprecationwarning

[ianhi]

ah good catch.

[ianhi]

Thanks!