mm/memory.c: do_numa_page(): delete bool "migrated"

Smatch gives the warning:

  do_numa_page() warn: assigning (-11) to unsigned variable 'migrated'

Link: https://lkml.kernel.org/r/1614603421-2681-1-git-send-email-wangqing@vivo.com


Signed-off-by: Wang Qing <wangqing@vivo.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>