video/backlight: remove obsolete cleanup for clientdata

A few new i2c-drivers came into the kernel which clear the
clientdata-pointer on exit or error.  This is obsolete meanwhile, the core
will do it.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/backlight/adp8870_bl.c

@@ -931,7 +931,6 @@ out:
 out1:
 	backlight_device_unregister(bl);
 out2:
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 
 	return ret;
@@ -951,7 +950,6 @@ static int __devexit adp8870_remove(struct i2c_client *client)
 			&adp8870_bl_attr_group);
 
 	backlight_device_unregister(data->bl);
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 
 	return 0;