Move dirview example to manual test

Change-Id: I9057d5efb1cdf3e425e879f8cc96a544c1892e77
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit fc0e82f58a8fbd879fb0867334b664bd83863d8d)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

examples/widgets/doc/src/dirview.qdoc

@@ -1,49 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
-
-/*!
-    \example itemviews/dirview
-    \title Dir View Example
-    \ingroup examples-itemviews
-    \brief This example demonstrates the usage of a tree view, and smooth flicking on a touchscreen.
-
-    The Dir View example shows a tree view of the local file
-    system. It uses the QFileSystemModel class to provide file
-    and directory information.
-
-    \borderedimage dirview-example.png
-
-    \quotefromfile itemviews/dirview/main.cpp
-    \skipto QCommandLineParser parser
-    \printuntil parser.positionalArguments
-
-    The example supports a number of command line options.
-    These options include:
-    \list
-        \li Application description
-        \li -help option
-        \li -version option
-        \li if the optionc {-c} is specified, the application will not
-            use custom directory options
-    \endlist
-
-    \skipto QFileSystemModel
-    \printuntil tree.setModel
-
-    Declares \c model as data model for reading the local filesystem.
-    \c model.setRootPath("") sets the current folder as the folder from
-    which \c model will start reading.
-    QTreeView object \c tree visualizes the filesystem in a tree structure.
-
-    \skipto tree.setAnimated(false)
-    \printuntil tree.setColumnWidth
-
-    Sets layout options for animation, indentation, sorting, and sizing of the
-    filesystem tree.
-
-    \skipto QScroller::grabGesture
-    \printuntil QScroller::grabGesture
-
-    Creates a \l QScroller instance to recognize gestures on touchscreens,
-    so that you can flick the tree view with your finger.
-*/

examples/widgets/itemviews/CMakeLists.txt

@@ -7,7 +7,6 @@ qt_internal_add_example(chart)
 qt_internal_add_example(coloreditorfactory)
 qt_internal_add_example(combowidgetmapper)
 qt_internal_add_example(customsortfiltermodel)
-qt_internal_add_example(dirview)
 qt_internal_add_example(editabletreemodel)
 qt_internal_add_example(fetchmore)
 qt_internal_add_example(frozencolumn)

examples/widgets/itemviews/itemviews.pro

@@ -5,7 +5,6 @@ SUBDIRS       = addressbook \
                 coloreditorfactory \
                 combowidgetmapper \
                 customsortfiltermodel \
-                dirview \
                 editabletreemodel \
                 fetchmore \
                 frozencolumn \