Remove "Porting QML Applications to Qt 6" page

-content moved to qtdeclarative and Qt Quick's qt6-changes.qdoc file
 in I3384e5
-removed links to the page

Task-number: QTBUG-87156
Change-Id: I8b597c43f3ca9655713fb79ed6ead07cb661fcd0
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

2 files changed, 0 insertions, 127 deletions

diff --git a/doc/src/qmlapp/applicationdevelopers.qdoc b/doc/src/qmlapp/applicationdevelopers.qdoc
index 9130afb41..b9285c555 100644
--- a/doc/src/qmlapp/applicationdevelopers.qdoc
+++ b/doc/src/qmlapp/applicationdevelopers.qdoc
@@ -146,7 +146,6 @@ QML code is used in applications.
 \li \l{All QML Types}
 \li \l{All QML APIs by Module}
 \li \l{Obsolete QML Types}
-\li \l{Porting QML Applications to Qt 6}
 \endlist
 
 */
diff --git a/doc/src/qmlapp/porting.qdoc b/doc/src/qmlapp/porting.qdoc
deleted file mode 100644
index 67aff1f12..000000000
--- a/doc/src/qmlapp/porting.qdoc
+++ /dev/null
@@ -1,126 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2020 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the documentation of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:FDL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU Free Documentation License Usage
-** Alternatively, this file may be used under the terms of the GNU Free
-** Documentation License version 1.3 as published by the Free Software
-** Foundation and appearing in the file included in the packaging of
-** this file. Please review the following information to ensure
-** the GNU Free Documentation License version 1.3 requirements
-** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-/*!
-\page qtquick-porting-qt6.html
-\title Porting QML Applications to Qt 6
-\brief Lists the Qt 6.0 changes that affect the existing QML applications
-
-When transitioning an application from Qt 5 to Qt 6, there are some smaller changes
-that may affect your application. Check the following list to see if you need to update
-your code to be compatible.
-
-\section1 Changed type of font.weight
-The type of \c font.weight has been changed to \c int. The pre-defined weight classes still
-exist, but it is now possible to use arbitrary integers to select fonts which do not
-match any of these weight classes. This ensures parity with the C++ API, where it has
-always been possible to express the font weight as an arbitrary integer.
-
-Most code will be unaffected by this, except in the case where an implicit conversion
-from a string to enum value was used.
-
-\code
-font.weight: "Bold"
-\endcode
-
-This code will no longer parse correctly and has to be replaced by its equivalent enum value,
-as demonstrated below.
-
-\code
-font.weight: Font.Bold
-\endcode
-
-\section1 Made FontLoader.name a read-only property
-In Qt 5, the name property of a FontLoader was writable and would override the source property
-of the item when set. This caused some confusion as to its purpose and could cause
-undeterministic behavior if there was a race condition between the setters for the conflicting
-properties.
-
-In Qt 6, it is no longer possible to set this property. It can only be read. This means that
-code such as the following will no longer work.
-
-\code
-FontLoader {
-    id: fontLoader
-    name: "Helvetica"
-}
-
-Text {
-    font.family: fontLoader.name
-    text: "Foobar"
-}
-\endcode
-
-Instead, use a custom property to store hardcoded font family names.
-
-\code
-property string fontName: "Helvetica"
-
-Text {
-    font.family: fontName
-    text: "Foobar"
-}
-\endcode
-
-\section1 The OpenGLInfo QML type has been removed
-
-OpenGLInfo was deprecated in Qt 5.8 due to being superseded by GraphicsInfo. In Qt 6,
-OpenGLInfo is removed. Use GraphicsInfo instead.
-
-\section1 OpenGL is no longer the default choice on some platforms
-
-While it will present no breaks for many applications, application developers
-should be aware that, OpenGL is not always the default choice anymore for Qt
-Quick rendering in Qt 6. Unless the \c software backend is used, a Qt Quick
-application could use OpenGL, Vulkan, Metal, or Direct3D 11 at run time. When no
-explicit request is made, either via the \c QSG_RHI_BACKEND environment variable
-or the QQuickWindow::setSceneGraphBackend() function, a platform-specific
-default is chosen by Qt Quick. This is currently Metal on macOS and iOS,
-Direct3D 11 on Windows, OpenGL elsewhere.
-
-\section1 ShaderEffect source properties are now URLs
-
-The ShaderEffect properties \l{ShaderEffect::vertexShader}{vertexShader} and
-\l{ShaderEffect::fragmentShader}{fragmentShader} both have a type of QUrl now,
-instead of QByteArray. Their behavior is therefore identical to other similar
-properties, such as \l{Image::source}{Image.source}. Existing code that refers
-to files via the \c file or \c qrc scheme will continue to work as-is. In
-addition, this change allows referring to files with a path relative to the
-component's (the .qml file's) location. Specifying the \c{file:} scheme is
-therefore optional now.
-
-\section1 ShaderEffect does not support inline GLSL shader strings anymore
-
-Just like with \l{QSGMaterial}{custom materials}, the effects are no longer
-specified in form of GLSL shader strings. Rather, shaders are expected to be
-preprocessed by the tools from the Qt Shader Tools module, such as the \c qsb
-command line tool, thus ensuring the shader assets are usable regardless of
-which graphics API (Vulkan, Metal, OpenGL, or Direct 3D) is used at run time.
-ShaderEffect items are expected to reference the resulting \c{.qsb} files.
-
-*/
-