FIX: Removed duplicate function declaration.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@265 bbd45198-f89e-11dd-88c7-29a3b14d5316

net/lwip/src/include/netif/ethernetif.h

@@ -21,7 +21,6 @@ struct eth_device
 	rt_err_t (*eth_tx)(rt_device_t dev, struct pbuf* p);
 };
 
-rt_err_t eth_system_device_init(void);
 rt_err_t eth_device_ready(struct eth_device* dev);
 
 rt_err_t eth_device_init(struct eth_device* dev, const char* name);