Don't import dotenv in fabfile
Don't import dotenv in fabfile

It's no longer necessary (and its presence means that the ebmbot
virtualenv needs to include django-dotenv)

annapowellsmith/openpresc,annapowellsmith/openpresc,ebmdatalab/openprescribing,ebmdatalab/openprescribing,annapowellsmith/openpresc,ebmdatalab/openprescribing,annapowellsmith/openpresc,ebmdatalab/openprescribing