Meson: Inline projecttree filepair

Change-Id: I62ba5ef90083f9bc342b4900bbc9ba57390d5e3f
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/mesonprojectmanager/projecttree.h

@@ -1,22 +0,0 @@
-// Copyright (C) 2020 Alexis Jeandet.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
-
-#pragma once
-
-#include "mesoninfoparser.h"
-#include "mesonprojectnodes.h"
-
-#include <utils/fileutils.h>
-
-namespace MesonProjectManager::Internal {
-
-class ProjectTree
-{
-public:
-    ProjectTree();
-    static std::unique_ptr<MesonProjectNode> buildTree(const Utils::FilePath &srcDir,
-                                                       const TargetsList &targets,
-                                                       const Utils::FilePaths &bsFiles);
-};
-
-} // namespace MesonProjectManager::Internal