Ports 9680 and 9683 after uninstall

I've uninstalled all things chef on my server but have noticed that nginx is still listening on ports 9680 and 9683 which are used to serve up:

9680 Chef server API internal LB port
9683 oc_bifrost internal LB port

Does someone know how I can stop these ports from listening? Maybe I missed something in the uninstall? Note that I am still using nginx for other sites on the machine. Thanks - Eric