Remove unfinished class files

src/constraint_hp.cpp

-/*
- * constraint_hp.cpp
- *
- *  Created on: Nov 28, 2016
- *      Author: jsola
- */
-
-#include "constraint_hp.h"

src/constraint_hp.h

-/*
- * constraint_hp.h
- *
- *  Created on: Nov 28, 2016
- *      Author: jsola
- */
-
-#ifndef CONSTRAINT_HP_H_
-#define CONSTRAINT_HP_H_
-
-#include "constraint_sparse.h"
-
-namespace wolf
-{
-
-class ConstraintHP : public ConstraintSparse<2, 3, 4, 4>
-{
-    public:
-        ConstraintHP()
-        {
-            // TODO Auto-generated constructor stub
-        }
-        virtual ~ConstraintHP()
-        {
-            //
-        }
-};
-
-} /* namespace wolf */
-
-#endif /* CONSTRAINT_HP_H_ */