if you have an action ability equipped in slot 2, you can remove it with:
/eaction 2 ""
If it's a piece of gear, its:
/equip body ""
if you are trying to remove something from the Action/Abilities in the master menu, you can click on the icon of the item and hit "Unequip" which appears on the right side options, at the top.
Edited, Sep 28th 2010 9:44pm by jadyness