MNT: Remove linting utilities from setup.cfg
MNT: Remove linting utilities from setup.cfg

Need to see if any of these extras are worth it, but we can leave these
linting things as configuration details for the actions. They're also
now more accurately reflected in linting_requirements.txt.

Unidata/MetPy,dopplershift/MetPy,Unidata/MetPy,dopplershift/MetPy,ShawnMurd/MetPy