Fix tests, samples and remove uneeded support files

Discretizer.h

@@ -24,6 +24,7 @@ namespace mdlp {
         torch::Tensor fit_transform_t(torch::Tensor& X_, torch::Tensor& y_);
         static inline std::string version() { return "1.2.3"; };
     protected:
+        void normalize_cutpoints();
         labels_t discretizedData = labels_t();
         cutPoints_t cutPoints; // At least two cutpoints must be provided, the first and the last will be ignored in transform
         bound_dir_t direction; // used in transform