How to delete orphaned networks after deleting 1KV

Hi All,

I am failing at my google-fu and looking for a good solution to clean up vcenter in my lab after creating port-profiles that were created via the Cisco 1000v VSM.  How do I go about deleting these extra network objects?

Below is a screenshot from a lab vCenter 5.5 I'm attempting to delete all of the network objects that are under the "orphaned networks" folder I created.  My apologies if my semantics are off while trying to communicate this.

Thanks!