mm: kill [add|del]_page_to_lru_list()

Now no one call [add|del]_page_to_lru_list(), let's drop unused page
interfaces.

Link:https://lkml.kernel.org/r/20230619110718.65679-2-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Yu Zhao <yuzhao@google.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: James Gowans <jgowans@amazon.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Author: Kefeng Wang

include/linux/mm_inline.h

@@ -323,12 +323,6 @@ void lruvec_add_folio(struct lruvec *lruvec, struct folio *folio)
 		list_add(&folio->lru, &lruvec->lists[lru]);
 }
 
-static __always_inline void add_page_to_lru_list(struct page *page,
-				struct lruvec *lruvec)
-{
-	lruvec_add_folio(lruvec, page_folio(page));
-}
-
 static __always_inline
 void lruvec_add_folio_tail(struct lruvec *lruvec, struct folio *folio)
 {
@@ -357,12 +351,6 @@ void lruvec_del_folio(struct lruvec *lruvec, struct folio *folio)
 			-folio_nr_pages(folio));
 }
 
-static __always_inline void del_page_from_lru_list(struct page *page,
-				struct lruvec *lruvec)
-{
-	lruvec_del_folio(lruvec, page_folio(page));
-}
-
 #ifdef CONFIG_ANON_VMA_NAME
 /*
  * mmap_lock should be read-locked when calling anon_vma_name(). Caller should