clockevents: remove prototypes of removed functions

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/clockchips.h

@@ -119,10 +119,6 @@ extern void clockevents_register_device(struct clock_event_device *dev);
 
 extern void clockevents_exchange_device(struct clock_event_device *old,
 					struct clock_event_device *new);
-extern
-struct clock_event_device *clockevents_request_device(unsigned int features,
-						      cpumask_t cpumask);
-extern void clockevents_release_device(struct clock_event_device *dev);
 extern void clockevents_set_mode(struct clock_event_device *dev,
 				 enum clock_event_mode mode);
 extern int clockevents_register_notifier(struct notifier_block *nb);