Archnemesis Modifier inventory is full

I can't find a way to open the Archnemesis Modifier inventory to make space. Is there a way to open this inventory and quickly drop them on PS4?

I wouldn't call it "quickly", but it works like this:

Open Archnemesis Invventory (L2 + R2 + Square)

Select component to drop (Square)

Confirm destruction (X + Triangle? I forget, but it's displayed on screen).

Please note it is impossible to actually "drop" them. They can only be destroyed.