Revert "arm64: mm: hugetlb: add support for free vmemmap pages of HugeTLB"

hulk inclusion
category: feature
bugzilla: 187198, https://gitee.com/openeuler/kernel/issues/I5GVFO



--------------------------------

There is a formal solution to support hugetlb vmemmap feature on arm64.

This reverts commit 5838d235.

Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>