vfs: remove unneeded unlikely()

IS_ERR() macro it is already including unlikely().
Signed-off-by: Hirofumi Nakagawa <nklabs@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/namei.c

@@ -3458,7 +3458,7 @@ static int do_tmpfile(struct nameidata *nd, unsigned flags,
 		goto out;
 	child = vfs_tmpfile(path.dentry, op->mode, op->open_flag);
 	error = PTR_ERR(child);
-	if (unlikely(IS_ERR(child)))
+	if (IS_ERR(child))
 		goto out2;
 	dput(path.dentry);
 	path.dentry = child;