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diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/src/SignalHandler.hpp b/Build/source/texk/dvisvgm/dvisvgm-src/src/SignalHandler.hpp
deleted file mode 100644
index ef6a0a4e556..00000000000
--- a/Build/source/texk/dvisvgm/dvisvgm-src/src/SignalHandler.hpp
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@@ -1,54 +0,0 @@
-/*************************************************************************
-** SignalHandler.hpp **
-** **
-** This file is part of dvisvgm -- a fast DVI to SVG converter **
-** Copyright (C) 2005-2021 Martin Gieseking <martin.gieseking@uos.de> **
-** **
-** This program is free software; you can redistribute it and/or **
-** modify it under the terms of the GNU General Public License as **
-** published by the Free Software Foundation; either version 3 of **
-** the License, or (at your option) any later version. **
-** **
-** This program is distributed in the hope that it will be useful, but **
-** WITHOUT ANY WARRANTY; without even the implied warranty of **
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **
-** GNU General Public License for more details. **
-** **
-** You should have received a copy of the GNU General Public License **
-** along with this program; if not, see <http://www.gnu.org/licenses/>. **
-*************************************************************************/
-
-#ifndef SIGNALHANDLER_HPP
-#define SIGNALHANDLER_HPP
-
-#include <exception>
-#include <memory>
-
-struct SignalException : public std::exception {
-};
-
-
-class SignalHandler {
- public:
- SignalHandler (const SignalHandler&) =delete;
- SignalHandler (SignalHandler&&) =delete;
- ~SignalHandler ();
- static SignalHandler& instance ();
- bool start ();
- void stop ();
- void check ();
- void trigger (bool notify);
- bool active () const {return _active;}
-
- protected:
- SignalHandler ();
- static void callback (int signal);
-
- private:
- bool _active=false; ///< true if listening for signals
- static volatile bool _break; ///< true if signal has been caught
- class Impl;
- std::unique_ptr<Impl> _impl; ///< system-specific data/functions
-};
-
-#endif