Remove QMediaImageViewer (SC break).

This class has turned out to be not very useful at this point in time.

Change-Id: Ic07132bdcd01a912a6dd1160c867979fd1307b6a
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>

doc/src/examples/slideshow.qdoc

@@ -1,75 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: http://www.qt-project.org/
-**
-** This file is part of the documentation of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:FDL$
-** GNU Free Documentation License
-** 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.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms
-** and conditions contained in a signed written agreement between you
-** and Nokia.
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-/*!
-    \example slideshow
-    \title SlideShow Example
-
-
-    \image slideshow-img1.png
-
-
-    Slideshow displays a series of time delayed images after you select a
-    source image directory to use. The folder button presents a list of three
-    options: browse for a directory, load a playlist or enter a location.
-
-    This implementation uses a QMediaImageViewer object for the image with
-    a QVideoWidget used to do the display. Whether the the source is a
-    browsed directory, a playlist file or a URL to a local or remote
-    location the playlist object in Slideshow is updated with the file or
-    multiple file locations. 
-
-    \code
-        connect(imageViewer, SIGNAL(stateChanged(QMediaImageViewer::State)),
-                this, SLOT(stateChanged(QMediaImageViewer::State)));
-
-        playlist = new QMediaPlaylist;
-        playlist->setMediaObject(imageViewer);
-    \endcode
-
-    We create a QVideoWidget to display the viewer and add it to the dialog.
-
-    \code
-        QVideoWidget *videoWidget = new QVideoWidget;
-        videoWidget->setMediaObject(imageViewer);
-    \endcode
-
-
-    \code
-        layout->addWidget(videoWidget, Qt::AlignCenter);
-    \endcode
-
-
-    The timeout between images is set by changing the timeout property in
-    QMediaImageViewer which is in milliseconds. So to change the timeout
-    to five seconds
-    \code
-        imageViewer->setTimeout( 5000 );
-    \endcode
-
-
-*/