QFileDialog::setDirectory(): remove unused local variable

Change-Id: I461679f7e47d6e98b3adda0114a5a3bd07a6a4d9
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>

src/widgets/dialogs/qfiledialog.cpp

@@ -933,7 +933,6 @@ void QFileDialog::setDirectory(const QString &directory)
 {
     Q_D(QFileDialog);
     QString newDirectory = directory;
-    QFileInfo info(directory);
     //we remove .. and . from the given path if exist
     if (!directory.isEmpty())
         newDirectory = QDir::cleanPath(directory);