Remove superfluous creation of iterator.

src/plugins/qt4projectmanager/qt4runconfiguration.cpp

@@ -553,8 +553,6 @@ void Qt4RunConfiguration::updateTarget()
 
     reader->setUserConfigCmdArgs(addedUserConfigArguments, removedUserConfigArguments);
 
-    QHash<QString, QStringList>::const_iterator it;
-
     if (!reader->readProFile(m_proFilePath)) {
         delete reader;
         Core::ICore::instance()->messageManager()->printToOutputPane(tr("Could not parse %1. The Qt4 run configuration %2 can not be started.").arg(m_proFilePath).arg(name()));