[PATCH] async: remove some duplicated includes

[Yangtao Li]

we include workqueue.h twice.It's unnecessary,so
just remove them.

Signed-off-by: Yangtao Li <tiny.windzz@xxxxxxxxx>
---
 kernel/async.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/async.c b/kernel/async.c
index a893d6170944..4932e9193fa3 100644
--- a/kernel/async.c
+++ b/kernel/async.c
@@ -55,7 +55,6 @@ asynchronous and synchronous parts of the kernel.
 #include <linux/wait.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
-#include <linux/workqueue.h>
 
 #include "workqueue_internal.h"
 
-- 
2.17.0