powerpc/pseries: Remove write only variable in PCI DLPAR

Since we never hotplug add an isa bus, we never need to set primary.
Delete this write-only variable.
Signed-off-by: NMilton Miller <miltonm@bga.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/platforms/pseries/pci_dlpar.c

@@ -137,11 +137,9 @@ EXPORT_SYMBOL_GPL(pcibios_add_pci_devices);
 struct pci_controller * __devinit init_phb_dynamic(struct device_node *dn)
 {
 	struct pci_controller *phb;
-	int primary;
 
 	pr_debug("PCI: Initializing new hotplug PHB %s\n", dn->full_name);
 
-	primary = list_empty(&hose_list);
 	phb = pcibios_alloc_controller(dn);
 	if (!phb)
 		return NULL;