!103 getaddrinfo和freeaddrinfo已经支持，去除unsupport打印

Merge pull request !103 from lnlan/rm_unsupport

porting/liteos_a/user/src/network/freeaddrinfo.c

-#include <stdlib.h>
-#include <stddef.h>
-#include <netdb.h>
-#include "lookup.h"
-#include "lock.h"
-#include <unsupported_api.h>
-
-void freeaddrinfo(struct addrinfo *p)
-{
-	size_t cnt;
-	unsupported_api(__FUNCTION__);
-	for (cnt=1; p->ai_next; cnt++, p=p->ai_next);
-	struct aibuf *b = (void *)((char *)p - offsetof(struct aibuf, ai));
-	b -= b->slot;
-	LOCK(b->lock);
-	if (!(b->ref -= cnt)) free(b);
-	else UNLOCK(b->lock);
-}