remove defensive code

pkg/server/http/server.go

@@ -74,9 +74,7 @@ func Server(opts ...Option) (http.Service, error) {
 	)
 
 	{
-		if options.Config.Tracing.Enabled {
-			handle = svc.NewTracing(handle)
-		}
+		handle = svc.NewTracing(handle)
 		handle = svc.NewInstrument(handle, options.Metrics)
 		handle = svc.NewLogging(handle, options.Logger)
 	}