pata_rdc: remove unused variable in rdc_init_one()

The variable port_flags is initialized but never used
otherwise, so remove the unused variable.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

drivers/ata/pata_rdc.c

@@ -327,7 +327,6 @@ static int __devinit rdc_init_one(struct pci_dev *pdev,
 	struct device *dev = &pdev->dev;
 	struct ata_port_info port_info[2];
 	const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };
-	unsigned long port_flags;
 	struct ata_host *host;
 	struct rdc_host_priv *hpriv;
 	int rc;
@@ -337,8 +336,6 @@ static int __devinit rdc_init_one(struct pci_dev *pdev,
 	port_info[0] = rdc_port_info;
 	port_info[1] = rdc_port_info;
 
-	port_flags = port_info[0].flags;
-
 	/* enable device and prepare host */
 	rc = pcim_enable_device(pdev);
 	if (rc)