debugfs: remove module_exit()

debugfs can't be a module, so module_exit() is meaningless for it.
Signed-off-by: WANG Cong <amwang@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

fs/debugfs/inode.c

@@ -13,9 +13,6 @@
  *
  */
 
-/* uncomment to get debug messages from the debug filesystem, ah the irony. */
-/* #define DEBUG */
-
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/mount.h>
@@ -540,17 +537,5 @@ static int __init debugfs_init(void)
 
 	return retval;
 }
-
-static void __exit debugfs_exit(void)
-{
-	debugfs_registered = false;
-
-	simple_release_fs(&debugfs_mount, &debugfs_mount_count);
-	unregister_filesystem(&debug_fs_type);
-	kobject_put(debug_kobj);
-}
-
 core_initcall(debugfs_init);
-module_exit(debugfs_exit);
-MODULE_LICENSE("GPL");