How disable LCD in new RB3011?
see the manual here: http://wiki.mikrotik.com/wiki/Manual:LCD_TouchScreen

No LCD opition in Winbox on RB3011…
is a new device so
maybe lcd package is missing
yo can download the standard Main package (now its avaliable), or try installing the lcd package (is on extra packages download)
In all_packages-arm-6.33.2 not LCD plugin…
Chechito, the standalone LCD package is not for routerboards, it has no relation to touchscreen.
Version 6.34rc18 has been released:
…
*) winbox - added LCD menu for RB3011;