How to Hide Chatbot with IBM watsonx Assistant Admin Menus

function plt_hide_conversation_watson_menus() {
	//Hide "watsonx Assistant".
	remove_menu_page('watson_asst');
	//Hide "watsonx Assistant → Set up Chatbot".
	remove_submenu_page('watson_asst', 'watson_asst_setup');
	//Hide "watsonx Assistant → Customize Plugin".
	remove_submenu_page('watson_asst', 'watson_asst_customize');
	//Hide "watsonx Assistant → Advanced Features".
	remove_submenu_page('watson_asst', 'watson_asst_advanced');
}

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

Where do I put this code?