lockfile: drop unnecessary headers from lockfile-util.h

src/shared/lockfile-util.h

@@ -1,11 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
-#include <stddef.h>
-
-#include "macro.h"
-#include "missing.h"
-
 typedef struct LockFile {
         char *path;
         int fd;

src/shared/machine-image.c

@@ -7,6 +7,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/file.h>
+#include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <linux/fs.h>