ACPI: Remove unused #define ACPI_PROCESSOR_FILE_POWER

Looks like a left over from /proc/acpi/processor/*/power which got removed
Signed-off-by: NThomas Renninger <trenn@suse.de>
Signed-off-by: NLen Brown <len.brown@intel.com>

drivers/acpi/processor_idle.c

@@ -64,7 +64,6 @@
 #define ACPI_PROCESSOR_CLASS            "processor"
 #define _COMPONENT              ACPI_PROCESSOR_COMPONENT
 ACPI_MODULE_NAME("processor_idle");
-#define ACPI_PROCESSOR_FILE_POWER	"power"
 #define PM_TIMER_TICK_NS		(1000000000ULL/PM_TIMER_FREQUENCY)
 #define C2_OVERHEAD			1	/* 1us */
 #define C3_OVERHEAD			1	/* 1us */