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diff --git a/src/declarative/particles/qquickfriction.cpp b/src/declarative/particles/qquickfriction.cpp
deleted file mode 100644
index c060deb95f..0000000000
--- a/src/declarative/particles/qquickfriction.cpp
+++ /dev/null
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-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the Declarative module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** This file may be used under the terms of the GNU Lesser General Public
-** License version 2.1 as published by the Free Software Foundation and
-** appearing in the file LICENSE.LGPL included in the packaging of this
-** file. Please review the following information to ensure the GNU Lesser
-** General Public License version 2.1 requirements will be met:
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU General
-** Public License version 3.0 as published by the Free Software Foundation
-** and appearing in the file LICENSE.GPL included in the packaging of this
-** file. Please review the following information to ensure the GNU General
-** Public License version 3.0 requirements will be met:
-** http://www.gnu.org/copyleft/gpl.html.
-**
-** 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.
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qquickfriction_p.h"
-QT_BEGIN_NAMESPACE
-/*!
-    \qmlclass Friction QQuickFrictionAffector
-    \inqmlmodule QtQuick.Particles 2
-    \inherits Affector
-    \brief The Friction affector slows down movement proportional to the particle's current speed.
-
-*/
-
-/*!
-    \qmlproperty real QtQuick.Particles2::Friction::factor
-
-    A drag will be applied to moving objects which is this factor of their current velocity.
-*/
-/*!
-    \qmlproperty real QtQuick.Particles2::Friction::threshold
-
-    The drag will only be applied to objects with a velocity above the threshold velocity. The
-    drag applied will bring objects down to the threshold velocity, but no further.
-
-    The default threshold is 0
-*/
-static qreal sign(qreal a)
-{
-    return a >= 0 ? 1 : -1;
-}
-
-static const qreal epsilon = 0.00001;
-
-QQuickFrictionAffector::QQuickFrictionAffector(QQuickItem *parent) :
-    QQuickParticleAffector(parent), m_factor(0.0), m_threshold(0.0)
-{
-}
-
-bool QQuickFrictionAffector::affectParticle(QQuickParticleData *d, qreal dt)
-{
-    if (!m_factor)
-        return false;
-    qreal curVX = d->curVX();
-    qreal curVY = d->curVY();
-    if (!curVX && !curVY)
-        return false;
-    qreal newVX = curVX + (curVX * m_factor * -1 * dt);
-    qreal newVY = curVY + (curVY * m_factor * -1 * dt);
-
-    if (!m_threshold) {
-        if (sign(curVX) != sign(newVX))
-            newVX = 0;
-        if (sign(curVY) != sign(newVY))
-            newVY = 0;
-    } else {
-        qreal curMag = sqrt(curVX*curVX + curVY*curVY);
-        if (curMag <= m_threshold + epsilon)
-            return false;
-        qreal newMag = sqrt(newVX*newVX + newVY*newVY);
-        if (newMag <= m_threshold + epsilon || //went past the threshold, stop there instead
-            sign(curVX) != sign(newVX) || //went so far past maybe it came out the other side!
-            sign(curVY) != sign(newVY)) {
-            qreal theta = atan2(curVY, curVX);
-            newVX = m_threshold * cos(theta);
-            newVY = m_threshold * sin(theta);
-        }
-    }
-
-    d->setInstantaneousVX(newVX);
-    d->setInstantaneousVY(newVY);
-    return true;
-}
-QT_END_NAMESPACE