Remove dead code in MainWindow
Remove dead code in MainWindow

guusdk/Spark,speedy01/Spark,speedy01/Spark,wrooot/Spark,wrooot/Spark,igniterealtime/Spark,guusdk/Spark,guusdk/Spark,igniterealtime/Spark,speedy01/Spark,igniterealtime/Spark,guusdk/Spark,wrooot/Spark,speedy01/Spark,wrooot/Spark,igniterealtime/Spark