remove two lines to prevent crash during compile for the mbed frdm k64f

Fork of lwip-eth by mbed official

Revision:
5:698d868a5285
Parent:
1:0c9d93e2f51c
--- a/arch/lpc17xx_emac.h	Fri Mar 01 15:30:33 2013 +0000
+++ b/arch/lpc17xx_emac.h	Thu May 30 17:15:45 2013 +0100
@@ -34,7 +34,7 @@
 #define LPC17XX_EMAC_H_
 
 /* Includes ------------------------------------------------------------------- */
-#include "LPC17xx.h"
+#include "cmsis.h"
 
 #ifdef __cplusplus
 extern "C"