Remove unused McCollisionExtra.h include

Author: romainschotter

PWGLF/DataModel/LFStrangenessTables.h

@@ -19,7 +19,6 @@
 #include "Common/Core/RecoDecay.h"
 #include "Common/DataModel/Centrality.h"
 #include "Common/DataModel/EventSelection.h"
-#include "Common/DataModel/McCollisionExtra.h" // IWYU pragma: keep (FIXME: not used, remove asap)
 #include "Common/DataModel/Multiplicity.h"
 #include "Common/DataModel/Qvectors.h"