basic + fundamental: Clean up includes

Split out of #37344.

src/basic/af-list.c

@@ -1,11 +1,9 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
-#include <errno.h>
 #include <string.h>
 #include <sys/socket.h>
 
 #include "af-list.h"
-#include "macro.h"
 #include "string-util.h"
 
 static const struct af_name* lookup_af(register const char *str, register GPERF_LEN_TYPE len);