Don't download metpy's dependencies for building docs.
Don't download metpy's dependencies for building docs.

There's no need, everything comes in from the docs/requirements.txt

ahaberlie/MetPy,dopplershift/MetPy,dopplershift/MetPy,jrleeman/MetPy,ahill818/MetPy,ahaberlie/MetPy,Unidata/MetPy,deeplycloudy/MetPy,Unidata/MetPy,ShawnMurd/MetPy,jrleeman/MetPy