bp/Listener: remove unused methods ListenTCP(), SetTcpDeferAccept()
bp/Listener: remove unused methods ListenTCP(), SetTcpDeferAccept()

CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy