AsyncFunc header is dead

since
    commit 688489959e
    Author: Caolán McNamara <caolanm@redhat.com>
    Date:   Tue Nov 2 14:25:24 2021 +0000
    Revert "tdf#117895: "Edit document properties before saving"..."

Change-Id: I65239b4d9ca96075701121edc32d07c91631c629
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/145966
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sfx2/IwyuFilter_sfx2.yaml

@@ -131,9 +131,6 @@ excludelist:
     sfx2/source/doc/signaturestate.cxx:
     # Actually used
     - com/sun/star/security/DocumentSignatureInformation.hpp
-    sfx2/source/inc/asyncfunc.hxx:
-    # base class has to be a complete type
-    - com/sun/star/lang/XUnoTunnel.hpp
     sfx2/source/sidebar/ControllerFactory.cxx:
     # Actually used
     - com/sun/star/frame/XFrame.hpp

sfx2/source/inc/asyncfunc.hxx

@@ -1,36 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*
- * This file is part of the LibreOffice project.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- */
-
-#ifndef INCLUDED_SFX2_ASYNCFUNC_HXX
-#define INCLUDED_SFX2_ASYNCFUNC_HXX
-
-#include <functional>
-
-#include <com/sun/star/lang/XUnoTunnel.hpp>
-#include <comphelper/servicehelper.hxx>
-#include <cppuhelper/implbase.hxx>
-
-class AsyncFunc final : public cppu::WeakImplHelper<css::lang::XUnoTunnel>
-{
-private:
-    std::function<void()> m_pAsyncFunc;
-
-public:
-    AsyncFunc(const std::function<void()>&);
-    virtual ~AsyncFunc() override;
-
-    void Execute();
-
-    //XUnoTunnel
-    UNO3_GETIMPLEMENTATION_DECL(AsyncFunc)
-};
-
-#endif
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */