Refactor: Remove Boost from Quadriflow

Extract Boykov-Kolmogorov max flow algorithm from boost::graph. As part
of work towards removing Boost as a Blender dependency.

Together with #133347 this removes the last direct Blender dependency
on Boost.

Pull Request: https://projects.blender.org/blender/blender/pulls/132142

intern/quadriflow/CMakeLists.txt

@@ -8,7 +8,6 @@ set(INC
 
 set(INC_SYS
   ../../extern/quadriflow/src
-  ${BOOST_INCLUDE_DIR}
   ${EIGEN3_INCLUDE_DIRS}
 )
 
@@ -20,7 +19,6 @@ set(SRC
 set(LIB
   PRIVATE bf::intern::guardedalloc
   extern_quadriflow
-  ${BOOST_LIBRARIES}
 )
 
 if(WIN32)