refactor: drop property_tree

Author: Becheler

CMakeLists.txt

@@ -39,7 +39,6 @@ target_link_libraries(boost_graph
     Boost::parameter
     Boost::preprocessor
     Boost::property_map
-    Boost::property_tree
     Boost::random
     Boost::range
     Boost::serialization

build.jam

@@ -28,7 +28,6 @@ constant boost_dependencies :
     /boost/parameter//boost_parameter
     /boost/preprocessor//boost_preprocessor
     /boost/property_map//boost_property_map
-    /boost/property_tree//boost_property_tree
     /boost/random//boost_random
     /boost/range//boost_range
     /boost/serialization//boost_serialization