claw: remove BUG_ONs

Remove BUG_ON's in claw driver, since the checked error conditions
are null pointer accesses.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/s390/net/claw.c

@@ -3018,10 +3018,8 @@ claw_remove_device(struct ccwgroup_device *cgdev)
 {
 	struct claw_privbk *priv;
 
-	BUG_ON(!cgdev);
 	CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cgdev->dev));
 	priv = dev_get_drvdata(&cgdev->dev);
-	BUG_ON(!priv);
 	dev_info(&cgdev->dev, " will be removed.\n");
 	if (cgdev->state == CCWGROUP_ONLINE)
 		claw_shutdown_device(cgdev);