batman-adv: Remove redundant 'flush_workqueue()' calls
'destroy_workqueue()' already drains the queue before destroying it, so there is no need to flush it explicitly. Remove the redundant 'flush_workqueue()' calls. This was generated with coccinelle: @@ expression E; @@ - flush_workqueue(E); destroy_workqueue(E); Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: NSven Eckelmann <sven@narfation.org> Signed-off-by: NSimon Wunderlich <sw@simonwunderlich.de>
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