How to remove keyboard systray icons

Edit file /etc/alternatives/x-session-manager

add a hash (ie. comment) as shown at the beginning of the following line 51:

#   (sleep 3; /usr/bin/keyboardstatus) &

To edit the file:

1. Load a terminal: Ctrl + Alt + T
2. Type: sudo kwrite /etc/alternatives/x-session-manager
3. Type a # before line 51 as shown above
4. Save and exit