remove extra newline in nanny debug output

2014-08-08T12:37:24.318222+00:00 wickedd-nanny[200]: ::: __ni_dbus_object_message(path=/org/opensuse/Network/Nanny, interface=org.opensuse.Network.Nanny, method=createPolicy) called
2014-08-08T12:37:24.318462+00:00 wickedd-nanny[200]: :::    +-> lo

2014-08-08T12:37:24.318471+00:00 wickedd-nanny[200]: :::    +-> eth0

2014-08-08T12:37:24.318479+00:00 wickedd-nanny[200]: ::: ni_dbus_server_register_object(path=Policy/policy__eth0, handle=0xd43fc0)