How to Hide WP AI CoPilot - AI content writer plugin, ChatGPT WordPress, GPT-3/4 , Ai assistance Admin Menus

function plt_hide_ai_co_pilot_for_wp_menus() {
	//Hide "WP AI Co-Pilot".
	remove_menu_page('aich-settings');
	//Hide "WP AI Co-Pilot → Settings".
	remove_submenu_page('aich-settings', 'aich-settings#tab=settings');
	//Hide "WP AI Co-Pilot → AI Content Generator".
	remove_submenu_page('aich-settings', 'aich-settings#tab=ai-content-generator');
	//Hide "WP AI Co-Pilot → Free Vs Pro".
	remove_submenu_page('aich-settings', 'aich-settings#tab=free-vs-pro');
}

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

Where do I put this code?