how do you get rid of quest items

for some reason when i did /fixquests i would keep getting yahya's stained bowls over and over again as well as other items that i already completed the quests for. how do i get rid of these items

 

a few ways:
-put them in your crafting grid, fill your inventory with emeralds (or anything) and close your inventory
-put them in your daily loot chest and close it
-put them on a new class and delete it

 

ty