Modify amserverconfig to not mention xinetd.
    
    In https://bugzilla.redhat.com/show_bug.cgi?id=1460763 a user is running
    amserverconfig and is confused because it tells them to mess with xinetd
    files.  Obviously xinetd manipulation is unnecessary on Fedora, but the
    script may otherwise be useful and it doesn't actually do anything with
    xinetd besides printing the message.
    
    So let's patch out the call to the function which outputs the
    xinetd-related message.