compilerDefinitions.cmake: define _LIBCPP_REMOVE_TRANSITIVE_INCLUDES with libc++ (#7400)

Author: firewave

cmake/compilerDefinitions.cmake

@@ -22,6 +22,7 @@ if(CPPCHK_GLIBCXX_DEBUG AND UNIX AND CMAKE_BUILD_TYPE STREQUAL "Debug")
                 add_definitions(-D_LIBCPP_ENABLE_ASSERTIONS=1)
             endif()
             # TODO: also add _LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS?
+            add_definitions(-D_LIBCPP_REMOVE_TRANSITIVE_INCLUDES)
         endif()
     else()
         # TODO: check if this can be enabled again for Clang - also done in Makefile