QmlDesigner: Do not remove puppet stream if puppet crashes

Change-Id: I0374fbd9007cd8965b886e5f0a872434046e2bcd
Reviewed-by: J-P Nurmi <jpnurmi@qt.io>

src/plugins/qmldesigner/designercore/instances/nodeinstanceserverproxy.cpp

@@ -405,7 +405,6 @@ void NodeInstanceServerProxy::processFinished(int exitCode, QProcess::ExitStatus
 
     if (m_captureFileForTest.isOpen()) {
         m_captureFileForTest.close();
-        m_captureFileForTest.remove();
         Core::AsynchronousMessageBox::warning(tr("QML Emulation Layer (QML Puppet) Crashed"),
                              tr("You are recording a puppet stream and the emulations layer crashed. "
                                 "It is recommended to reopen the Qt Quick Designer and start again."));