diff --git a/demos/host/host_os_none/lwipopts.h b/demos/host/host_os_none/lwipopts.h
deleted file mode 100644
index af428cd8..00000000
--- a/demos/host/host_os_none/lwipopts.h
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
- * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * This file is part of the lwIP TCP/IP stack.
- *
- * Author: Adam Dunkels <adam@sics.se>
- *
- */
-
-#ifndef __LWIPOPTS_H_
-#define __LWIPOPTS_H_
-
-//--------------------------------------------------------------------+
-// Platform
-//--------------------------------------------------------------------+
-#define NO_SYS                          1 // 1 : No RTOS
-
-#define NO_SYS_NO_TIMERS                0
-
-//--------------------------------------------------------------------+
-// Memory
-//--------------------------------------------------------------------+
-#define SYS_LIGHTWEIGHT_PROT            0
-
-#define MEM_ALIGNMENT                   4
-
-/* the number of buffers in the pbuf pool. In zero-copy mode, these buffers are
-   located in peripheral RAM. In copied mode, they are located in internal IRAM */
-#define PBUF_POOL_SIZE                  7
-
-#define ETH_PAD_SIZE                    0
-
-#define IP_SOF_BROADCAST                1
-#define IP_SOF_BROADCAST_RECV           1
-
-//--------------------------------------------------------------------+
-// Checksum Options
-//  1 : Checksum is generated in software
-//  0 : Checksum is generated in hardware
-//--------------------------------------------------------------------+
-/* The ethernet FCS is performed in hardware. The IP, TCP, and UDP
-   CRCs still need to be done in hardware. */
-#define CHECKSUM_GEN_IP                 1
-#define CHECKSUM_GEN_UDP                1
-#define CHECKSUM_GEN_TCP                1
-#define CHECKSUM_CHECK_IP               1
-#define CHECKSUM_CHECK_UDP              1
-#define CHECKSUM_CHECK_TCP              1
-#define LWIP_CHECKSUM_ON_COPY           1
-
-/* Use LWIP version of htonx() to allow generic functionality across
-   all platforms. If you are using the Cortex Mx devices, you might
-   be able to use the Cortex __rev instruction instead. */
-#define LWIP_PLATFORM_BYTESWAP          0
-
-/* Non-static memory, used with DMA pool */
-#define MEM_SIZE                        (12 * 1024)
-
-//--------------------------------------------------------------------+
-// Protocols
-//--------------------------------------------------------------------+
-#define LWIP_RAW                        1
-#define LWIP_DHCP                       1
-#define LWIP_SNMP                       0
-#define LWIP_IGMP                       0
-#define LWIP_DNS                        0
-
-#define LWIP_UDP                        1
-#define LWIP_TCP                        1
-
-/* Hostname can be used */
-#define LWIP_NETIF_HOSTNAME             1
-
-#define LWIP_BROADCAST_PING             1
-
-//--------------------------------------------------------------------+
-// TCP Options
-//--------------------------------------------------------------------+
-/* MSS should match the hardware packet size */
-#define TCP_MSS                         1460
-#define TCP_SND_BUF                     (2 * TCP_MSS)
-
-#define LWIP_SOCKET                     0
-#define LWIP_NETCONN                    0
-#define MEMP_NUM_SYS_TIMEOUT            300 // FIXME check settings
-
-//--------------------------------------------------------------------+
-// Statistics options
-//--------------------------------------------------------------------+
-#define LWIP_STATS                      0
-#define LINK_STATS                      0
-#define LWIP_STATS_DISPLAY              0
-
-//--------------------------------------------------------------------+
-// DEBUG options
-//--------------------------------------------------------------------+
-/* There are more *_DEBUG options that can be selected.
-   See opts.h. Make sure that LWIP_DEBUG is defined when
-   building the code to use debug. */
-#define TCP_DEBUG                       LWIP_DBG_OFF
-#define ETHARP_DEBUG                    LWIP_DBG_OFF
-#define PBUF_DEBUG                      LWIP_DBG_OFF
-#define IP_DEBUG                        LWIP_DBG_OFF
-#define TCPIP_DEBUG                     LWIP_DBG_OFF
-#define DHCP_DEBUG                      LWIP_DBG_OFF
-#define UDP_DEBUG                       LWIP_DBG_OFF
-
-/* This define is custom for the LPC EMAC driver. Enabled it to
-   get debug messages for the driver. */
-#define EMAC_DEBUG                    LWIP_DBG_OFF
-
-#endif /* __LWIPOPTS_H_ */