Remove NameVirtualHost from https configuration

Under 'Configure the dashboard for HTTPS' , when I apply 2. and restart
apache I receive this error:

"NameVirtualHost has no effect and will be removed in the next release
/etc/apache2/ports.conf".

So step 2 is not required now

Change-Id: I829c2070eaa849981a36795538bb8247877732a1
Closes-bug: #1397359
Merge "Remove NameVirtualHost from https configuration"