How to Hide Frozzer – Update Control Admin Menus

function plt_hide_frozzer_menus() {
	//Hide "Frozzer".
	remove_menu_page('frozzer');
	//Hide "Frozzer → Dashboard".
	remove_submenu_page('frozzer', 'frozzer');
	//Hide "Frozzer → Plugins  Themes".
	remove_submenu_page('frozzer', 'frozzer-items');
	//Hide "Frozzer → Activity Log".
	remove_submenu_page('frozzer', 'frozzer-logs');
	//Hide "Frozzer → Settings".
	remove_submenu_page('frozzer', 'frozzer-settings');
}

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

Where do I put this code?