basic + fundamental: Clean up includes

Split out of #37344.

src/basic/memfd-util.c

@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
-#include <errno.h>
 #include <stdio.h>
 #include <sys/prctl.h>
 #include <sys/stat.h>
@@ -9,12 +8,9 @@
 #include "alloc-util.h"
 #include "errno-util.h"
 #include "fd-util.h"
-#include "log.h"
-#include "macro.h"
 #include "memfd-util.h"
-#include "missing_fcntl.h"
 #include "missing_mman.h"
-#include "missing_syscall.h"
+#include "missing_sched.h"
 #include "string-util.h"
 #include "utf8.h"