platform/x86: think-lmi: Remove custom kobject sysfs_ops

think-lmi defines its own sysfs_ops that are identical to the standard
kobj_sysfs_ops. Use the standard definitions.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20230314-think-lmi-sysfs_ops-v1-1-9d4f1cf9caec@weissschuh.net


Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>