Discarding Items Directly Through The Retainers' Inventory (Suggestion)

I have all available classes leveled up to at least level 50. Before then, I accumulated gear under level 50 and made my retainer hold on to these sets of gear. While getting ready for Stromborn and knowing that the up and coming classes will be level 50 to boot, i decided to attempt to discard these items directly through my retainers' inventory, but it seems like there is no way to do that.





Doesn't this sound like a nifty idea? ;)