staging: rtl8723bs: core: Remove return in void function

Remove return in void function to get rid of checkpatch warning.
Signed-off-by: Vatsala Narang <vatsalanarang@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/core/rtw_xmit.c

@@ -2861,8 +2861,6 @@ void xmit_delivery_enabled_frames(struct adapter *padapter, struct sta_info *pst
 
 	/* spin_unlock_bh(&psta->sleep_q.lock); */
 	spin_unlock_bh(&pxmitpriv->lock);
-
-	return;
 }
 
 void enqueue_pending_xmitbuf(