plugins/traffic-control: remove latency and packet loss from generic metadata

Latency and packet loass are displayed in the table, there is not need to
show them in the general section too.

examples/plugins/traffic-control/report.go

@@ -150,14 +150,6 @@ func (r *Reporter) getContainerNodes() map[string]node {
 			nodes[nodeID] = node{
 				LatestControls: getTrafficNodeControls(timestamp, dead),
 				Latest: map[string]stringEntry{
-					"traffic-control-latency": {
-						Timestamp: timestamp,
-						Value:     latency,
-					},
-					"traffic-control-pktloss": {
-						Timestamp: timestamp,
-						Value:     pktLoss,
-					},
 					"traffic-control-table-latency": {
 						Timestamp: timestamp,
 						Value:     latency,