ubifs: Fix RENAME_WHITEOUT support

Remove faulty leftover check in do_rename(), apparently introduced in a
merge that combined whiteout support changes with commit f03b8ad8
("fs: support RENAME_NOREPLACE for local filesystems")

Fixes: f03b8ad8 ("fs: support RENAME_NOREPLACE for local
filesystems")
Fixes: 9e0a1fff ("ubifs: Implement RENAME_WHITEOUT")
Cc: stable@vger.kernel.org
Signed-off-by: NFelix Fietkau <nbd@nbd.name>
Signed-off-by: NRichard Weinberger <richard@nod.at>

fs/ubifs/dir.c

@@ -1318,9 +1318,6 @@ static int do_rename(struct inode *old_dir, struct dentry *old_dentry,
 	unsigned int uninitialized_var(saved_nlink);
 	struct fscrypt_name old_nm, new_nm;
 
-	if (flags & ~RENAME_NOREPLACE)
-		return -EINVAL;
-
 	/*
 	 * Budget request settings: deletion direntry, new direntry, removing
 	 * the old inode, and changing old and new parent directory inodes.