Remove unimplemented "memp_realloc" function from memp.h.

CHANGELOG

@@ -67,6 +67,9 @@ HISTORY
 
   ++ Bug fixes:
   
+  2007-03-19 Frédéric Bernon
+  * Remove unimplemented "memp_realloc" function from memp.h.
+  
   2007-03-11 Simon Goldschmidt
   * pbuf.c: checked in patch #5796: pbuf_alloc: len field claculation caused
     memory corruption.

src/include/lwip/memp.h

@@ -54,11 +54,10 @@ typedef enum {
   MEMP_MAX
 } memp_t;
 
-void memp_init(void);
+void  memp_init(void);
 
 void *memp_malloc(memp_t type);
-void *memp_realloc(memp_t fromtype, memp_t totype, void *mem);
-void memp_free(memp_t type, void *mem);
+void  memp_free(memp_t type, void *mem);
 
 #endif /* __LWIP_MEMP_H__  */