Remove CLHEP global position method
Remove CLHEP versions of methods, and switch m_center for m_origin for ITk strip endcap compatibility.
This MR was motivated by the latter change, but since there was no m_originCLHEP
for a direct replacement in globalPositionCLHEP
, I made the necessary changes to allow this version of the method to be removed, rather than adding another new CLHEP version of a member variable.