If you're looking to remove localhost or 127.0.0.1 from the URL for your local development sites (i.e., use "dev.example.com" instead of "127.0.0.1/dev.example.com"), this worked for me:
Edit Applications/AMPPS/apache/conf/httpd.conf
change <VirtualHost 127.0.0.1:80> (line 510 on my machine)