Remove unneeded stements from license headers

app/batchextract.cpp

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2008 Harald Hvaal <haraldhv@stud.ntnu.no>
     SPDX-FileCopyrightText: 2009-2010 Raphael Kubo da Costa <rakuco@FreeBSD.org>
 

app/batchextract.h

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2008 Harald Hvaal <haraldhv@stud.ntnu.no>
     SPDX-FileCopyrightText: 2009-2010 Raphael Kubo da Costa <rakuco@FreeBSD.org>
 

app/compressfileitemaction.cpp

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2016 Elvis Angelaccio <elvis.angelaccio@kde.org>
     SPDX-FileCopyrightText: 2021 Alexander Lohnau <alexander.lohnau@gmx.de>
 

app/compressfileitemaction.h

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2016 Elvis Angelaccio <elvis.angelaccio@kde.org>
     SPDX-FileCopyrightText: 2021 Alexander Lohnau <alexander.lohnau@gmx.de>
 

app/extractHereDndPlugin.cpp

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2009 Harald Hvaal <haraldhv (at@at) stud.ntnu.no>
 
     SPDX-License-Identifier: GPL-2.0-or-later

app/extractHereDndPlugin.h

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2009 Harald Hvaal <haraldhv (at@at) stud.ntnu.no>
 
     SPDX-License-Identifier: GPL-2.0-or-later

app/extractfileitemaction.cpp

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2016 Elvis Angelaccio <elvis.angelaccio@kde.org>
     SPDX-FileCopyrightText: 2021 Alexander Lohnau <alexander.lohnau@gmx.de>
 

app/extractfileitemaction.h

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2016 Elvis Angelaccio <elvis.angelaccio@kde.org>
     SPDX-FileCopyrightText: 2021 Alexander Lohnau <alexander.lohnau@gmx.de>
 

app/main.cpp

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2007 Henrique Pinto <henrique.pinto@kdemail.net>
     SPDX-FileCopyrightText: 2008-2009 Harald Hvaal <haraldhv@stud.ntnu.no>
     SPDX-FileCopyrightText: 2015-2017 Ragnar Thomsen <rthomsen6@gmail.com>

app/mainwindow.cpp

 /*
-    ark -- archiver for the KDE project
-
     Copyright (C) 2002-2003: Georg Robbers <Georg.Robbers@urz.uni-hd.de>
     Copyright (C) 2003: Helio Chissini de Castro <helio@conectiva.com>
     SPDX-FileCopyrightText: 2007 Henrique Pinto <henrique.pinto@kdemail.net>

app/mainwindow.h

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2007 Henrique Pinto <henrique.pinto@kdemail.net>
     SPDX-FileCopyrightText: 2008 Harald Hvaal <haraldhv@stud.ntnu.no>
     SPDX-FileCopyrightText: 2021 Jiří Wolker <woljiri@gmail.com>

app/welcomescreen.cpp

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2021 Jiří Wolker <woljiri@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later

app/welcomescreen.h

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2021 Jiří Wolker <woljiri@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later

kerfuffle/adddialog.cpp

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2016 Ragnar Thomsen <rthomsen6@gmail.com>
 
     SPDX-License-Identifier: BSD-2-Clause

kerfuffle/adddialog.h

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2016 Ragnar Thomsen <rthomsen6@gmail.com>
 
     SPDX-License-Identifier: BSD-2-Clause

kerfuffle/addtoarchive.cpp

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2008 Harald Hvaal <haraldhv@stud.ntnu.no>
     SPDX-FileCopyrightText: 2009 Raphael Kubo da Costa <rakuco@FreeBSD.org>
 

kerfuffle/addtoarchive.h

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2008 Harald Hvaal <haraldhv@stud.ntnu.no>
     SPDX-FileCopyrightText: 2009 Raphael Kubo da Costa <rakuco@FreeBSD.org>
 

kerfuffle/cliinterface.cpp

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2009 Harald Hvaal <haraldhv@stud.ntnu.no>
     SPDX-FileCopyrightText: 2009-2011 Raphael Kubo da Costa <rakuco@FreeBSD.org>
     SPDX-FileCopyrightText: 2016 Vladyslav Batyrenko <mvlabat@gmail.com>

kerfuffle/cliinterface.h

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2009 Harald Hvaal <haraldhv@stud.ntnu.no>
     SPDX-FileCopyrightText: 2009-2011 Raphael Kubo da Costa <rakuco@FreeBSD.org>
     SPDX-FileCopyrightText: 2016 Vladyslav Batyrenko <mvlabat@gmail.com>

kerfuffle/cliproperties.cpp

 /*
-    ark -- archiver for the KDE project
-
     SPDX-FileCopyrightText: 2016 Ragnar Thomsen <rthomsen6@gmail.com>
 
     SPDX-License-Identifier: BSD-2-Clause