[RFC4741] 7.5.8.  NETCONF <edit-config> Operations

   Containers can be created, deleted, replaced, and modified through

   <edit-config>, by using the "operation" attribute, in the container's XML element.

   If a container does not have a "presence" statement and the last

   child node is deleted, the NETCONF server MAY delete the container.

netconfd-pro does NOT delete a parent non-presence container after the last child node is deleted.