Exclude local-config.php and remote-config.php from the production rsync

We don't want local-config, as it will load the local config.

We don't want to delete the remote-config.php that's already there, as it will never be in the repository.
Remove the creation of a production database user and password

This is slightly misleading if we leave it in as it disguises the amount of setup that needs to be done in reality