staging: rtl8723bs: Remove unnecessary braces

Remove braces that are not necessary for any arm of this statement.
Issue found by checkpatch.
Signed-off-by: Javier F. Arias <jarias.linux@gmail.com>
Link: https://lore.kernel.org/r/20191006230327.GA4168@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/core/rtw_xmit.c

@@ -3074,9 +3074,8 @@ void rtw_ack_tx_done(struct xmit_priv *pxmitpriv, int status)
 {
 	struct submit_ctx *pack_tx_ops = &pxmitpriv->ack_tx_ops;
 
-	if (pxmitpriv->ack_tx) {
+	if (pxmitpriv->ack_tx)
 		rtw_sctx_done_err(&pack_tx_ops, status);
-	} else {
+	else
 		DBG_871X("%s ack_tx not set\n", __func__);
-	}
 }