basic: include only what we use

This is a cleaned up result of running iwyu but without forward
declarations on src/basic.

src/basic/lockfile-util.c

@@ -20,20 +20,18 @@
 ***/
 
 #include <errno.h>
-#include <limits.h>
-#include <stdbool.h>
+#include <fcntl.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
 #include <sys/file.h>
+#include <sys/stat.h>
 
 #include "alloc-util.h"
 #include "fd-util.h"
-#include "fileio.h"
 #include "fs-util.h"
 #include "lockfile-util.h"
 #include "path-util.h"
-#include "util.h"
+#include "macro.h"
 
 int make_lock_file(const char *p, int operation, LockFile *ret) {
         _cleanup_close_ int fd = -1;