Removing the Change Wallpaper right click option from Thuanr

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http://crunchbanglinux.org – I have created a custom action in the Thunar file manager to change my wallpaper using Feh. The problem is that there is already a right click entry for changing wallpaper in Thunar but it does not work because I'm not running XFCE. Is there anyway to remove this option from the Thunar right click menu. Thank you for any help in advance. (HowTos)