sfc: Do not set net_device::trans_start in self-test

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sfc/selftest.c b/drivers/net/sfc/selftest.c
index 4f4f287..1580607 100644
--- a/drivers/net/sfc/selftest.c
+++ b/drivers/net/sfc/selftest.c
@@ -435,7 +435,6 @@
 			kfree_skb(skb);
 			return -EPIPE;
 		}
-		efx->net_dev->trans_start = jiffies;
 	}
 
 	return 0;