File freeorion-drop-boost_system.patch of Package freeorion

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5130a9b..6ae5967 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -283,7 +283,6 @@ find_package(Boost ${MINIMUM_BOOST_VERSION}
         log
         log_setup
         serialization
-        system
         thread
     REQUIRED)
 
diff --git a/GG/CMakeLists.txt b/GG/CMakeLists.txt
index 6c3b282..f386f20 100644
--- a/GG/CMakeLists.txt
+++ b/GG/CMakeLists.txt
@@ -66,7 +66,7 @@ endif()
 
 set(MINIMUM_BOOST_VERSION 1.69.0)
 
-find_package(Boost ${MINIMUM_BOOST_VERSION} COMPONENTS filesystem regex system REQUIRED)
+find_package(Boost ${MINIMUM_BOOST_VERSION} COMPONENTS filesystem regex REQUIRED)
 
 find_package(OpenGL REQUIRED)
 find_package(GLEW REQUIRED)