Refactor Hit class by removing unused code

Removed unnecessary includes and simplified the Print method.

Author: njacazio

Detectors/Upgrades/ALICE3/TRK/simulation/src/Hit.cxx

@@ -13,22 +13,3 @@
 /// \brief Implementation of the Hit class
 
 #include "TRKSimulation/Hit.h"
-
-#include <iostream>
-#include <iostream>
-
-ClassImp(o2::trk::Hit);
-
-using std::cout;
-using std::endl;
-using namespace o2::trk;
-using namespace o2; //::base;
-
-void Hit::Print(const Option_t* opt) const
-{
-  printf(
-    "Det: %5d Track: %6d E.loss: %.3e P: %+.3e %+.3e %+.3e\n"
-    "PosIn: %+.3e %+.3e %+.3e PosOut: %+.3e %+.3e %+.3e\n",
-    GetDetectorID(), GetTrackID(), GetEnergyLoss(), GetPx(), GetPy(), GetPz(),
-    GetStartX(), GetStartY(), GetStartZ(), GetX(), GetY(), GetZ());
-}