How to Hide AI Power: Complete AI Pack Admin Menus

function plt_hide_gpt3_ai_content_generator_menus() {
	//Hide "Posts → Generate New Post".
	remove_submenu_page('edit.php', 'wpaicg_single_content');

	//Hide "AI Power".
	remove_menu_page('wpaicg');
	//Hide "AI Power → Dashboard".
	remove_submenu_page('wpaicg', 'wpaicg');
	//Hide "AI Power → Content Writer".
	remove_submenu_page('wpaicg', 'wpaicg_single_content');
	//Hide "AI Power → AutoGPT".
	remove_submenu_page('wpaicg', 'wpaicg_bulk_content');
	//Hide "AI Power → Image Generator".
	remove_submenu_page('wpaicg', 'wpaicg_image_generator');
	//Hide "AI Power → AI Forms".
	remove_submenu_page('wpaicg', 'wpaicg_forms');
	//Hide "AI Power → Training".
	remove_submenu_page('wpaicg', 'wpaicg_embeddings');
	//Hide "AI Power → Role Manager".
	remove_submenu_page('wpaicg', 'wpaicg_roles');
	//Hide "AI Power → Contact Us".
	remove_submenu_page('wpaicg', 'wpaicg-contact');
	//Hide "AI Power → Upgrade".
	remove_submenu_page('wpaicg', 'wpaicg-pricing');
}

add_action('admin_menu', 'plt_hide_gpt3_ai_content_generator_menus', 1000000000);
Where do I put this code?