tty: n_smux: Remove redundant variable set

Remove duplicate setting of the pkt.flags field which is harmless, but
redundant.

Change-Id: I6d2579216a03c4ca5ca3b06092ed8a9208d3e891
Signed-off-by: Eric Holmberg <eholmber@codeaurora.org>
diff --git a/drivers/tty/n_smux.c b/drivers/tty/n_smux.c
index 65bcb08..c3d5106 100644
--- a/drivers/tty/n_smux.c
+++ b/drivers/tty/n_smux.c
@@ -1005,7 +1005,6 @@
 	pkt->hdr.cmd = SMUX_CMD_BYTE;
 	pkt->hdr.flags = ch;
 	pkt->hdr.lcid = SMUX_BROADCAST_LCID;
-	pkt->hdr.flags = ch;
 
 	list_add_tail(&pkt->list, &smux.power_queue);
 	queue_work(smux_tx_wq, &smux_tx_work);