wan: dscc4: fix build warning Wunused-but-set-variable

Fix:
drivers/net/wan/dscc4.c: In function 'dscc4_open':
drivers/net/wan/dscc4.c:1049:25: warning: variable 'ppriv' set but not used
[-Wunused-but-set-variable]

This has been in there unused since 1da177e4 (Linux-2.6.12-rc2) simply
remove it.
Signed-off-by: NNicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/wan/dscc4.c

@@ -1046,7 +1046,6 @@ static void dscc4_pci_reset(struct pci_dev *pdev, void __iomem *ioaddr)
 static int dscc4_open(struct net_device *dev)
 {
 	struct dscc4_dev_priv *dpriv = dscc4_priv(dev);
-	struct dscc4_pci_priv *ppriv;
 	int ret = -EAGAIN;
 
 	if ((dscc4_loopback_check(dpriv) < 0))
@@ -1055,8 +1054,6 @@ static int dscc4_open(struct net_device *dev)
 	if ((ret = hdlc_open(dev)))
 		goto err;
 
-	ppriv = dpriv->pci_priv;
-
 	/*
 	 * Due to various bugs, there is no way to reliably reset a
 	 * specific port (manufacturer's dependent special PCI #RST wiring