mm: remove inc/dec lruvec page state functions

Patch series "Remove some lruvec page accounting functions", v2.

Some functions are now unused; remove them.  Make
__mod_lruvec_page_state() unused and then remove it.


This patch (of 6):

All callers of these have been converted to their folio equivalents.

Link: https://lkml.kernel.org/r/20231228085748.1083901-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20231228085748.1083901-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>