old_netdevs is unused in ethtool-common.sh. Only the UDP tunnels test
uses that variable, but it maintains it locally.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
---
 .../testing/selftests/drivers/net/netdevsim/ethtool-common.sh | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh b/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh
index 80160579e0cc..d9c7a3d397a9 100644
--- a/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh
+++ b/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh
@@ -43,13 +43,11 @@ function check {
 }
 
 function make_netdev {
-    # Make a netdevsim
-    old_netdevs=$(ls /sys/class/net)
-
     if ! $(lsmod | grep -q netdevsim); then
 	modprobe netdevsim
     fi
 
+    # Make a netdevsim
     echo $NSIM_ID $@ > /sys/bus/netdevsim/new_device
     udevadm settle
     # get new device name
-- 
2.49.0