How to Hide Tableberg Admin Menus

function plt_hide_tableberg_menus() {
	//Hide "Tableberg".
	remove_menu_page('tableberg-settings');
	//Hide "Tableberg → Tableberg".
	remove_submenu_page('tableberg-settings', 'tableberg-settings');
	//Hide "Tableberg → Contact Us".
	remove_submenu_page('tableberg-settings', 'tableberg-settings-contact');
	//Hide "Tableberg → Support Forum".
	remove_submenu_page('tableberg-settings', 'tableberg-settings-wp-support-forum');
	//Hide "Tableberg → Add-Ons".
	remove_submenu_page('tableberg-settings', 'tableberg-settings-addons');
}

add_action('admin_menu', 'plt_hide_tableberg_menus', 1000000000);

Where do I put this code?