staging: rtl8723au: rtw_free_recvframe23a() is always passed precvpriv->free_recv_queue

No point in passing in the pointer to free_recv_queue, when we always
pass in the same value.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>