kobject: drop unnecessary cast "%llu" for u64

There is no searon for u64 var cast to unsigned long long type.

Signed-off-by: Bo YU <tsu.yubo@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 63d0816..402765c 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -579,7 +579,7 @@
 
 	mutex_lock(&uevent_sock_mutex);
 	/* we will send an event, so request a new sequence number */
-	retval = add_uevent_var(env, "SEQNUM=%llu", (unsigned long long)++uevent_seqnum);
+	retval = add_uevent_var(env, "SEQNUM=%llu", ++uevent_seqnum);
 	if (retval) {
 		mutex_unlock(&uevent_sock_mutex);
 		goto exit;