[IA64] Minor cleanups - remove CONFIG_ACPI_DEALLOCATE_IRQ

The config option 'CONFIG_ACPI_DEALLOCATE_IRQ' is no longer
needed. This patch removes it.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/pci/pci.c

@@ -498,13 +498,11 @@ pcibios_enable_device (struct pci_dev *dev, int mask)
 	return acpi_pci_irq_enable(dev);
 }
 
-#ifdef CONFIG_ACPI_DEALLOCATE_IRQ
 void
 pcibios_disable_device (struct pci_dev *dev)
 {
 	acpi_pci_irq_disable(dev);
 }
-#endif /* CONFIG_ACPI_DEALLOCATE_IRQ */
 
 void
 pcibios_align_resource (void *data, struct resource *res,