As boost is now a dependency of the MITK Core we can get rid of boost headers that were copied to the MITK Core and mangled. One example is
Modules/Core/include/mitkPPSeqForEach.h

I assume we can remove all these headers and just remove the MITK_ in front of the calls, such as
MITK_PP_SEQ_TAIL
to
PP_SEQ_TAIL