C-4：EPSON RC+ 7.0各版本中删除的命令

删除了EPSON RC+ 6.0, 5.0, 4.0中以下命令

EPSON RC+ 7.0版本号	EPSON RC+ 6.0	EPSON RC+ 5.0	EPSON RC+ 4.0
Ver.7.1.2	SetLCD	SetLCD	SetLCD
Ver.7.0.0	Dir Type	-	Dir Type