ACPI: thermal: Drop list of device ACPI handles from struct acpi_thermal

Notice that the list of device ACPI handles in struct acpi_thermal is not
used and drop it.

No functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>

drivers/acpi/thermal.c

@@ -111,7 +111,6 @@ struct acpi_thermal {
 	volatile u8 zombie;
 	struct acpi_thermal_trips trips;
 	struct thermal_trip *trip_table;
-	struct acpi_handle_list devices;
 	struct thermal_zone_device *thermal_zone;
 	int kelvin_offset;	/* in millidegrees */
 	struct work_struct thermal_check_work;