filemap: remove __set_page_dirty()

All callers have been converted to use folios; remove this wrapper.

Link: https://lkml.kernel.org/r/20240327185447.1076689-1-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/pagemap.h

@@ -1147,11 +1147,6 @@ void folio_end_writeback(struct folio *folio);
 void wait_for_stable_page(struct page *page);
 void folio_wait_stable(struct folio *folio);
 void __folio_mark_dirty(struct folio *folio, struct address_space *, int warn);
-static inline void __set_page_dirty(struct page *page,
-		struct address_space *mapping, int warn)
-{
-	__folio_mark_dirty(page_folio(page), mapping, warn);
-}
 void folio_account_cleaned(struct folio *folio, struct bdi_writeback *wb);
 void __folio_cancel_dirty(struct folio *folio);
 static inline void folio_cancel_dirty(struct folio *folio)