[MISC] Remove useless header part

cmd/main.cc

-/// @file implementation/main.cc
-/// @brief Implementation main entry point
-/// @author gm
-/// @copyright gm
-///
 /// This file is part of SandBox
 ///
 /// SandBox is free software: you can redistribute it and/or modify

include/sandbox/common.h

-/// @file common.h
-/// @brief SandBox common utilities header
-/// @author gm
-/// @copyright gm
-///
 /// This file is part of SandBox
 ///
 /// SandBox is free software: you can redistribute it and/or modify

include/sandbox/configuration.h

-/// @file configuration.h
-/// @brief SandBox configuration file
-///
 /// Provides basic preprocessor macros in order to detect
 /// user variables/hardware/OS/compiler...
 ///
-/// @author gm
-/// @copyright gm
-///
 /// This file is part of SandBox
 ///
 /// SandBox is free software: you can redistribute it and/or modify

include/sandbox/dummygroup/dummygroup.h

-/// @file dummygroup.h
-/// @author gm
-/// @copyright gm
-///
 /// This file is part of SandBox
 ///
 /// SandBox is free software: you can redistribute it and/or modify

lib/dummygroup/dummyclass.cc

-/// @file dummyclass.cc
-/// @brief Dummy class definition
-/// @author gm
-/// @copyright gm
-///
 /// This file is part of SandBox
 ///
 /// SandBox is free software: you can redistribute it and/or modify

lib/dummygroup/dummyclass.h

-/// @file dummyclass.h
-/// @brief Dummy class declaration
-/// @author gm
-/// @copyright gm
-///
 /// This file is part of SandBox
 ///
 /// SandBox is free software: you can redistribute it and/or modify

lib/dummygroup/dummygroup.cc

-/// @file dummygroup.cc
-/// @brief Dummy class definition
-/// @author gm
-/// @copyright gm
-///
 /// This file is part of SandBox
 ///
 /// SandBox is free software: you can redistribute it and/or modify