Remove unused `setup.py dev` alias
Remove unused `setup.py dev` alias

dietsche/letsencrypt,dietsche/letsencrypt,jtl999/certbot,jtl999/certbot,TheBoegl/letsencrypt,jsha/letsencrypt,letsencrypt/letsencrypt,mitnk/letsencrypt,lmcro/letsencrypt,wteiken/letsencrypt,DavidGarciaCat/letsencrypt,wteiken/letsencrypt,brentdax/letsencrypt,mitnk/letsencrypt,DavidGarciaCat/letsencrypt,stweil/letsencrypt,brentdax/letsencrypt,bsmr-misc-forks/letsencrypt,TheBoegl/letsencrypt,thanatos/lets-encrypt-preview,bsmr-misc-forks/letsencrypt,thanatos/lets-encrypt-preview,letsencrypt/letsencrypt,stweil/letsencrypt,lmcro/letsencrypt,jsha/letsencrypt