iwlwifi: drop PCIe workaround applicable for development boards

This patch remove w/a used for development boards.
These boards are not available thus no need to keep it inside driver

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-4965.c

@@ -381,21 +381,11 @@ out:
 static void iwl4965_nic_config(struct iwl_priv *priv)
 {
 	unsigned long flags;
-	u16 dctl;
 	u16 radio_cfg;
 	u16 lctl;
 
 	spin_lock_irqsave(&priv->lock, flags);
 
-	if ((priv->rev_id & 0x80) == 0x80 && (priv->rev_id & 0x7f) < 8) {
-		int pos = pci_find_capability(priv->pci_dev, PCI_CAP_ID_EXP);
-		pci_read_config_word(priv->pci_dev, pos + PCI_EXP_DEVCTL, &dctl);
-
-		/* Enable No Snoop field */
-		pci_write_config_word(priv->pci_dev, pos + PCI_EXP_DEVCTL,
-					dctl & ~PCI_EXP_DEVCTL_NOSNOOP_EN);
-	}
-
 	lctl = iwl_pcie_link_ctl(priv);
 
 	/* HW bug W/A - negligible power consumption */