Remove the last usage of Math.hpp

src/openrct2/core/Math.hpp

@@ -1,27 +0,0 @@
-/*****************************************************************************
- * Copyright (c) 2014-2018 OpenRCT2 developers
- *
- * For a complete list of all authors, please refer to contributors.md
- * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
- *
- * OpenRCT2 is licensed under the GNU General Public License version 3.
- *****************************************************************************/
-
-#pragma once
-
-#include <algorithm>
-
-/**
- * Common mathematical functions.
- */
-namespace Math
-{
-    template<typename T> static T Sign(T x)
-    {
-        if (x < 0)
-            return -1;
-        if (x > 0)
-            return 1;
-        return 0;
-    }
-} // namespace Math