Prune the source tree to the Release 2 build closure

Keep only what the Release 2 scope (46 targets) compiles and the build
pipeline needs, derived from the run-5 build.ninja closure (46 targets +
transitive deps) and a header scan resolved against the real -I roots of
the compile rules:

- 14133 tracked files removed (1.25 GB), incl. include/ArcGIS (1.03 GB),
  include/rti stubs (identical copies of the external RTI headers),
  out-of-scope Lts/Application, Lts/Viewer, Lts/Services/*, Lts/Tools
  generators, src/, tests/, specs/, translations/, external/
- kept: the 46 scope modules + their transitive service deps, codegen
  inputs (.xml, .grantlee), doxygen/ (configure_file at configure time),
  include/GeographicLib (libGeographicLib.so linked from the source tree),
  the 12 referenced include/ stub headers, pipeline files
  (new_docker_build_release2.sh, rpmbuild/, jenkins-ci-rme/, cmake/)
- 7 CMakeLists updated: drop add_subdirectory calls of the removed dirs
  (tests, translations, Lts/Plugins/ProjectDataManagement, qav, scripts,
  CommonUnitTestsPlaceholder, httq, LtsRestClient, LtsWebSocket,
  TopicEditorBase, ConnectDialog, StyleManager, Routing, DdsUnitTests,
  DdsUnitTestsPlaceholder, Light, Dark, Test, ExerciseManagement,
  ParticipantManagement, the 3 tools generators)

Result: 2157 tracked files (was 16290).

qt6-after/qt6-migrated-legatus/include/grantlee/rendercontext.h

@@ -1,83 +0,0 @@
-/*
-  This file is part of the Grantlee template system.
-
-  Copyright (c) 2010 Stephen Kelly <steveire@gmail.com>
-
-  This library is free software; you can redistribute it and/or
-  modify it under the terms of the GNU Lesser General Public
-  License as published by the Free Software Foundation; either version
-  2.1 of the Licence, or (at your option) any later version.
-
-  This library 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
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public
-  License along with this library.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
-
-#ifndef GRANTLEE_RENDERCONTEXT_H
-#define GRANTLEE_RENDERCONTEXT_H
-
-#include "grantlee_templates_export.h"
-
-#include <QtCore/QVariantHash>
-
-/// @headerfile rendercontext.h grantlee/rendercontext.h
-
-namespace Grantlee
-{
-
-class ContextPrivate;
-class TemplateImpl;
-class Node;
-
-class RenderContextPrivate;
-
-/**
-   @brief Provides storage facility for state while rendering a template.
-
-   This class can not be instatiated by users of it. An instance
-   of **%RenderContext** is available through Context::renderContext() for use
-   with implementations of re-entrant template tags.
- */
-class GRANTLEE_TEMPLATES_EXPORT RenderContext
-{
-public:
-  /**
-    Returns the data for the node @p scopeNode.
-   */
-  QVariant &data(const Node *const scopeNode);
-
-  /**
-    Returns whether the **%RenderContext** contains data for @p scopeNode.
-   */
-  bool contains(Node *const scopeNode) const;
-
-  /**
-    Destructor
-   */
-  ~RenderContext();
-
-#ifndef Q_QDOC
-private:
-  RenderContext();
-
-  void push();
-
-  void pop();
-
-private:
-  friend class ContextPrivate;
-  friend class TemplateImpl;
-
-  Q_DISABLE_COPY(RenderContext)
-  Q_DECLARE_PRIVATE(RenderContext)
-  RenderContextPrivate *const d_ptr;
-#endif
-};
-}
-
-#endif