mm-khugepaged-unify-pmd-folio-installation-with-map_anon_folio_pmd-fix

mm-khugepaged-unify-pmd-folio-installation-with-map_anon_folio_pmd-fix

remove unneeded map_anon_folio_pmd_nopf() stub, per Wei & David

Cc: David Hildenbrand <david@redhat.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Usama Arif <usamaarif642@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>