Fix xinetd service name to not have appended : in service name.

The xinetd support was broken in the merge with upstart.  It would leave the appended : to the service name. As shown below:

    myserver.example.com:
        - crond
        - eklogin:
        - ekrb5-telnet:
        - ip6tables
        - iptables


This patch strips the : from the service name.