How to Hide VK Filter Search Admin Menus

function plt_hide_vk_filter_search_menus() {
	//Hide the "VK Filter Search" menu.
	remove_menu_page('edit.php?post_type=filter-search');
	//Hide the "VK Filter Search → VK Filter Search" menu.
	remove_submenu_page('edit.php?post_type=filter-search', 'edit.php?post_type=filter-search');
	//Hide the "VK Filter Search → Add Post" menu.
	remove_submenu_page('edit.php?post_type=filter-search', 'post-new.php?post_type=filter-search');
}

add_action('admin_menu', 'plt_hide_vk_filter_search_menus', 15);

Where do I put this code?