mm: remove page_idle and page_young wrappers

All users have now been converted to the folio equivalents, so remove the
page wrappers.

Link: https://lkml.kernel.org/r/20240402201252.917342-4-willy@infradead.orgSigned-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

include/linux/page_idle.h

@@ -119,29 +119,4 @@ static inline void folio_clear_idle(struct folio *folio)
 }
 
 #endif /* CONFIG_PAGE_IDLE_FLAG */
-
-static inline bool page_is_young(struct page *page)
-{
-	return folio_test_young(page_folio(page));
-}
-
-static inline void set_page_young(struct page *page)
-{
-	folio_set_young(page_folio(page));
-}
-
-static inline bool test_and_clear_page_young(struct page *page)
-{
-	return folio_test_clear_young(page_folio(page));
-}
-
-static inline bool page_is_idle(struct page *page)
-{
-	return folio_test_idle(page_folio(page));
-}
-
-static inline void set_page_idle(struct page *page)
-{
-	folio_set_idle(page_folio(page));
-}
 #endif /* _LINUX_MM_PAGE_IDLE_H */