Fix another lint error

Signed-off-by: Tomasz Pietrek <tomasz@nats.io>

pubsub/jetstream/metadata.go

@@ -117,7 +117,6 @@ func parseMetadata(psm pubsub.Metadata) (metadata, error) {
 		if duration, err := time.ParseDuration(trimmed); err == nil {
 			backOff = append(backOff, duration)
 		}
-
 	}
 	m.backOff = backOff
 

pubsub/jetstream/metadata_test.go

@@ -67,7 +67,7 @@ func TestParseMetadata(t *testing.T) {
 				replicas:       3,
 				memoryStorage:  true,
 				rateLimit:      20000,
-				hearbeat:       time.Duration(time.Second * 1),
+				hearbeat:       time.Second * 1,
 			},
 			expectErr: false,
 		},