http adaptor link remains after connector deletion on edge router

When deleting an HTTP/1 connector on an edge router the adaptor's links remain bound to the service address.

This prevents the edge router from dropping the proxy links associated with the adaptor, which results in messages being forwarded to the edge router for the service that is no longer present.

To reproduce: configure an edge router with a connector to an http service.  Once the connection and links are established, delete the connector via qdmanage.  After the connection has been removed there is still a proxy link to the service address on the edge router.