Fix for cmake 4.

--- lugaru-1.2/CMakeLists.txt	2017-02-11 19:09:37.000000000 +0000
+++ lugaru-1.2/CMakeLists.txt	2025-07-04 05:19:47.175358858 +0100
@@ -1,7 +1,6 @@
 project(lugaru)
 
 cmake_minimum_required(VERSION 3.0)
-cmake_policy(SET CMP0004 OLD)
 
 include(FindPkgConfig)
 include(GNUInstallDirs)