base/node: Remove duplicated include

Remove duplicated include of linux/hugetlb.h. Resolves checkincludes
message.

Signed-off-by: GUO Zihua <guozihua@huawei.com>
Link: https://lore.kernel.org/r/20230810120008.25297-1-guozihua@huawei.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>