cxgb4: remove unused vpd_cap_addr

It is likely that this is a leftover from T3 driver heritage. cxgb4 uses
the PCI core VPD access code that handles detection of VPD capabilities.
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/chelsio/cxgb4/cxgb4.h

@@ -414,7 +414,6 @@ struct pf_resources {
 };
 
 struct pci_params {
-	unsigned int vpd_cap_addr;
 	unsigned char speed;
 	unsigned char width;
 };

drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c

@@ -3201,8 +3201,6 @@ static void cxgb4_mgmt_fill_vf_station_mac_addr(struct adapter *adap)
 	int err;
 	u8 *na;
 
-	adap->params.pci.vpd_cap_addr = pci_find_capability(adap->pdev,
-							    PCI_CAP_ID_VPD);
 	err = t4_get_raw_vpd_params(adap, &adap->params.vpd);
 	if (err)
 		return;