PM / Sleep: Remove unused symbol 'suspend_cpu_hotplug'

Remove the suspend_cpu_hotplug declaration, which doesn't correspond
to an existing variable.

[rjw: Added the changelog.]
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

include/linux/cpu.h

@@ -196,13 +196,9 @@ static inline void cpu_hotplug_driver_unlock(void)
 #endif		/* CONFIG_HOTPLUG_CPU */
 
 #ifdef CONFIG_PM_SLEEP_SMP
-extern int suspend_cpu_hotplug;
-
 extern int disable_nonboot_cpus(void);
 extern void enable_nonboot_cpus(void);
 #else /* !CONFIG_PM_SLEEP_SMP */
-#define suspend_cpu_hotplug	0
-
 static inline int disable_nonboot_cpus(void) { return 0; }
 static inline void enable_nonboot_cpus(void) {}
 #endif /* !CONFIG_PM_SLEEP_SMP */