kill ancient comment in arch/sparc/kernel/irq.c

@@ -356,9 +356,6 @@ void sparc_floppy_irq(int irq, void *dev
 	floppy_interrupt(irq, dev_id, regs);
 	irq_exit();
 	enable_pil_irq(irq);
-	// XXX Eek, it's totally changed with preempt_count() and such
-	// if (softirq_pending(cpu))
-	//	do_softirq();
 }
 #endif