Can't Store/Sell/Drop Duplicate U/U Items = Inventory Hogs

After doing the AF quests in 1.0, I stored several items in my Armoire in my Inn room while doing the AF quests in ARR. So I ended up getting duplicates of several AF items. I can't store those items in my Armoire; it says that I can only store one of that item type in my Armoire.

I also can't sell the AF items (unsellable), and I can't drop/discard them. That probably makes sense, so that people don't accidentally sell or discard AF items.

So these items now take up a permanent spot in my inventory/Armory Chest.

I also got several bathing suits from this year's summer event. I didn't know at the time that they were the same bathing suits from previous summer events. Again, I can't store them in my Armoire, can't sell them, and can't discard them.

Between AF and bathing suits, I've currently got about 11 items that are permanently taking up inventory spots.

Help me, SE. Please make it possible to discard these items. Thanks.