how to remove icon from desktop

[abdelkader belahcene <abelahcene@gmail.com>]

Hi,
I installed  aptosid (  ex-sidux), based on debian sid.
It uses  xfce manager.

On the desktop I have many icons ( like  other patitions, trash, ..), I want to remove them, where to do it,
 they don't appear in the Desktop directory  (they are not links).

By the way,  I think, if I really understand it ??,    xrandr   replaces  xorg,  I can't find the file used  by xrandr  unlike
xorg  uses  xorg.conf.
  

thanks  a lot
bela