How to Hide WPZOOM Instagram Widget & Block Admin Menus

function plt_hide_instagram_widget_by_wpzoom_menus() {
	//Hide "Instagram Widget".
	remove_menu_page('edit.php?post_type=wpz-insta_feed');
	//Hide "Instagram Widget → Feeds".
	remove_submenu_page('edit.php?post_type=wpz-insta_feed', 'edit.php?post_type=wpz-insta_feed');
	//Hide "Instagram Widget → Users".
	remove_submenu_page('edit.php?post_type=wpz-insta_feed', 'edit.php?post_type=wpz-insta_user');
	//Hide "Instagram Widget → Settings".
	remove_submenu_page('edit.php?post_type=wpz-insta_feed', 'wpz-insta_settings');
	//Hide "Instagram Widget → Support".
	remove_submenu_page('edit.php?post_type=wpz-insta_feed', 'wpzoom-instagram-support');
	//Hide "Instagram Widget → Upgrade to Pro".
	remove_submenu_page('edit.php?post_type=wpz-insta_feed', 'https://www.wpzoom.com/plugins/instagram-widget/?utm_campaign=liteplugin&utm_medium=admin-menu&utm_source=WordPress&utm_content=Upgrade+to+Pro');
}

add_action('admin_menu', 'plt_hide_instagram_widget_by_wpzoom_menus', 11);
Where do I put this code?