How to Hide MC4WP: Mailchimp for WordPress Admin Menus

function plt_hide_mailchimp_for_wp_menus() {
	//Hide "MC4WP".
	remove_menu_page('mailchimp-for-wp');
	//Hide "MC4WP → Mailchimp".
	remove_submenu_page('mailchimp-for-wp', 'mailchimp-for-wp');
	//Hide "MC4WP → Form".
	remove_submenu_page('mailchimp-for-wp', 'mailchimp-for-wp-forms');
	//Hide "MC4WP → Integrations".
	remove_submenu_page('mailchimp-for-wp', 'mailchimp-for-wp-integrations');
	//Hide "MC4WP → Other".
	remove_submenu_page('mailchimp-for-wp', 'mailchimp-for-wp-other');
	//Hide "MC4WP → Add-ons".
	remove_submenu_page('mailchimp-for-wp', 'mailchimp-for-wp-extensions');
}

add_action('admin_menu', 'plt_hide_mailchimp_for_wp_menus', 11);

Where do I put this code?