Auto-draft by 1-click

It’s very weird, but every time that you click on New post on top right you’ll get a new auto-draft in post table, if you click 10 times on New post you’ll have 10 post auto-draft. I found this code to disable auto-draft:

function disable_autosave() {
    wp_deregister_script('autosave');
}

add_action( 'wp_print_scripts', 'disable_autosave' );

I put into /themes/my_theme/functions.php but doesn’t work.

On post.php and post-new.php I comment the code:

wp_enqueue_script('autosave')

And didn’t work 😐

There is an alternative to disable it?

Thanks!