atmel: remove set but not used variable 'dev'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/wireless/atmel/atmel_cs.c:120:21:
 warning: variable dev set but not used [-Wunused-but-set-variable]

It is never used, so can remove it.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/atmel/atmel_cs.c

@@ -117,11 +117,9 @@ static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
 
 static int atmel_config(struct pcmcia_device *link)
 {
-	struct local_info *dev;
 	int ret;
 	const struct pcmcia_device_id *did;
 
-	dev = link->priv;
 	did = dev_get_drvdata(&link->dev);
 
 	dev_dbg(&link->dev, "atmel_config\n");