device/pci_device.c: Drop redundant guard

This guard is nested inside an identical guard already.

Change-Id: I2b315ee6620865429097041035ad493ddcc51884
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55891
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>

src/device/pci_device.c

@@ -1635,11 +1635,9 @@ void pci_assign_irqs(struct device *dev, const unsigned char pIntAtoD[4])
 
 		pci_write_config8(dev, PCI_INTERRUPT_LINE, pIntAtoD[line - 1]);
 
-#if CONFIG(PC80_SYSTEM)
 		/* Change to level triggered. */
 		i8259_configure_irq_trigger(pIntAtoD[line - 1],
 					    IRQ_LEVEL_TRIGGERED);
-#endif
 	}
 }