mm: remove unnecessary pagevec includes

These files no longer need pagevec.h, mostly due to function declarations
being moved out of it.

Link: https://lkml.kernel.org/r/20230621164557.3510324-14-willy@infradead.orgSigned-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/fadvise.c

@@ -14,7 +14,6 @@
 #include <linux/mm.h>
 #include <linux/pagemap.h>
 #include <linux/backing-dev.h>
-#include <linux/pagevec.h>
 #include <linux/fadvise.h>
 #include <linux/writeback.h>
 #include <linux/syscalls.h>

mm/memory_hotplug.c

@@ -13,7 +13,6 @@
 #include <linux/pagemap.h>
 #include <linux/compiler.h>
 #include <linux/export.h>
-#include <linux/pagevec.h>
 #include <linux/writeback.h>
 #include <linux/slab.h>
 #include <linux/sysctl.h>

mm/migrate.c

@@ -21,7 +21,6 @@
 #include <linux/buffer_head.h>
 #include <linux/mm_inline.h>
 #include <linux/nsproxy.h>
-#include <linux/pagevec.h>
 #include <linux/ksm.h>
 #include <linux/rmap.h>
 #include <linux/topology.h>

mm/readahead.c

@@ -120,7 +120,6 @@
 #include <linux/export.h>
 #include <linux/backing-dev.h>
 #include <linux/task_io_accounting_ops.h>
-#include <linux/pagevec.h>
 #include <linux/pagemap.h>
 #include <linux/psi.h>
 #include <linux/syscalls.h>

mm/swap_state.c

@@ -16,7 +16,6 @@
 #include <linux/pagemap.h>
 #include <linux/backing-dev.h>
 #include <linux/blkdev.h>
-#include <linux/pagevec.h>
 #include <linux/migrate.h>
 #include <linux/vmalloc.h>
 #include <linux/swap_slots.h>