md: remove needless setting of thread->timeout in raid10_quiesce

As bitmap_create and bitmap_destroy already set thread->timeout
as appropriate, there is no need to do it in raid10_quiesce.
There is a possible need to wake the thread after the timeout
has been set low, but it is better to do that where the timeout
is actually set low, in bitmap_create.

Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index c1f28a8..b1bcd36 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1695,6 +1695,7 @@
 	mddev->bitmap = bitmap;
 
 	mddev->thread->timeout = mddev->bitmap_info.daemon_sleep;
+	md_wakeup_thread(mddev->thread);
 
 	bitmap_update_sb(bitmap);