message: Add function to remove the global track array from the BasePart
diff: @@ -260,6 +260,10 @@ class AliFemtoDreamBasePart {
  fVGTI = VGTI;
  fTrackBufferSize = size;
  }
  + void KillGlobalTrackArray() {
  + fGTI = nullptr;
  + fVGTI = nullptr;
  + }
  int GetEventMultiplicity() const {
  return fEvtMultiplicity;
  }
  