basic + fundamental: Clean up includes

Split out of #37344.

src/basic/tmpfile-util.c

@@ -1,23 +1,16 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
-#include <sys/mman.h>
+#include <stdlib.h>
+#include <unistd.h>
 
 #include "alloc-util.h"
 #include "errno-util.h"
 #include "fd-util.h"
 #include "fileio.h"
 #include "fs-util.h"
-#include "hexdecoct.h"
 #include "log.h"
-#include "macro.h"
-#include "memfd-util.h"
-#include "missing_fcntl.h"
-#include "missing_syscall.h"
 #include "path-util.h"
-#include "process-util.h"
 #include "random-util.h"
-#include "stat-util.h"
-#include "stdio-util.h"
 #include "string-util.h"
 #include "sync-util.h"
 #include "tmpfile-util.h"