How to remove email id & website box in wordpress comment

You can do by adding few lines of code in functions.php or using Disable Comment plugin.

But adding few lines of code would be great.

Steps:

1. Go to Editor > Open functions.php file.
2. Scroll down to the end of file and add lines of code given below

function comments_custom_settings($fields) { 
    unset($fields['url']);
    unset($fields['email']);
    return $fields;
}
add_filter('comment_form_default_fields','comments_custom_settings');

3. Save it and check.

I hope this answer helps you!