genirq: Remove unused functions irqd_[set|clr]_chained_irq_inprogress()

These two functions are not used anywhere in the kernel source tree so
remove them.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Link: http://lkml.kernel.org/r/1443704093-36837-2-git-send-email-mika.westerberg@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

include/linux/irq.h

@@ -297,21 +297,6 @@ static inline void irqd_clr_forwarded_to_vcpu(struct irq_data *d)
 	__irqd_to_state(d) &= ~IRQD_FORWARDED_TO_VCPU;
 }
 
-/*
- * Functions for chained handlers which can be enabled/disabled by the
- * standard disable_irq/enable_irq calls. Must be called with
- * irq_desc->lock held.
- */
-static inline void irqd_set_chained_irq_inprogress(struct irq_data *d)
-{
-	__irqd_to_state(d) |= IRQD_IRQ_INPROGRESS;
-}
-
-static inline void irqd_clr_chained_irq_inprogress(struct irq_data *d)
-{
-	__irqd_to_state(d) &= ~IRQD_IRQ_INPROGRESS;
-}
-
 static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
 {
 	return d->hwirq;