I wish to not have squids drop ANY items upon death by another mob. I figured this would work:

[
{
"mob": "Squid",
"remove": ["minecraft:dye", "yummy:raw_squid"]
},
{
"mob": "Squid",
"player": true,
"item": ["minecraft:dye", "yummy:raw_squid"],
"itemcount": "2-3/3-4/4-6"
}
]

It does remove the ink sacs but the raw squid is still dropping on death by other mobs.