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diff --git a/src/png/info_base.hpp b/src/png/info_base.hpp
deleted file mode 100644
index 45e154296..000000000
--- a/src/png/info_base.hpp
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Copyright (C) 2007,2008   Alex Shulgin
- *
- * This file is part of png++ the C++ wrapper for libpng.  PNG++ is free
- * software; the exact copying conditions are as follows:
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#ifndef PNGPP_INFO_BASE_HPP_INCLUDED
-#define PNGPP_INFO_BASE_HPP_INCLUDED
-
-#include <cassert>
-#include "error.hpp"
-#include "types.hpp"
-
-namespace png
-{
-
-    class io_base;
-
-    /**
-     * \brief Internal class to hold PNG info or end_info.
-     */
-    class info_base
-    {
-        info_base(info_base const&);
-        info_base& operator=(info_base const&);
-
-    public:
-        info_base(io_base& io, png_struct* png)
-            : m_io(io),
-              m_png(png),
-              m_info(png_create_info_struct(m_png))
-        {
-        }
-
-        png_info* get_png_info() const
-        {
-            return m_info;
-        }
-
-        png_info** get_png_info_ptr()
-        {
-            return & m_info;
-        }
-
-    protected:
-        io_base& m_io;
-        png_struct* m_png;
-        png_info* m_info;
-    };
-
-} // namespace png
-
-#endif // PNGPP_INFO_BASE_HPP_INCLUDED