Remove client monitoring

[lenny-goodell]

Per the Core WG 6/18/2020 meeting the active Client Monitoring via polling Consul is to be removed.

This Client Monitoring is setup here:
https://github.com/lenny-intel/app-functions-sdk-go/blob/master/internal/bootstrap/handlers/clients.go#L81

Each new client needs to be changed to just use localURL.New from go-mod-core-contracts for the URL.
Example:
change

		eventClient = coredata.NewEventClient(
			urlclient.New(
				ctx,
				wg,
				registryClient,
				clients.CoreDataServiceKey,
				clients.ApiEventRoute,
				interval,
				config.Clients[common.CoreDataClientName].Url()+clients.ApiEventRoute,
			),
		)

to

		eventClient = coredata.NewEventClient(localURL.New(config.Clients[common.CoreDataClientName].Url() + clients.ApiEventRoute))

Once the changes have been made the following packages can be removed:

• pkg/urlclient
• pkg/endpoint

ServiceInfo.ClientMonitor can also be removed