[Data] Remove useless includes

src/multibody/data.hpp

@@ -25,10 +25,8 @@
 #include "pinocchio/spatial/motion.hpp"
 #include "pinocchio/spatial/inertia.hpp"
 #include "pinocchio/multibody/fwd.hpp"
-#include "pinocchio/multibody/frame.hpp"
 #include "pinocchio/multibody/joint/joint.hpp"
 #include "pinocchio/deprecated.hh"
-#include "pinocchio/utils/string-generator.hpp"
 #include "pinocchio/container/aligned-vector.hpp"
 
 #include <iostream>