ACPI: custom_method: Remove dead ACPICA debug code

ACPICA debug code _COMPONENT and ACPI_MODULE_NAME() is not
used in custom_method.c, remove it.

Signed-off-by: Hanjun Guo <guohanjun@huawei.com>
[ rjw: Subject edit ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>