Armor unlock question

Okay so here’s the deal. My friend logged into his profile on my Xbox. He bought the halo 4 console. So every time I level up now it shows the armor unlock and it unlocks a ton of preorder and fotus armor. I know I don’t actually unlock it but its annoying that everytime I level up it spams this armor. I have already removed his profile from my Xbox. Does anyone know of a solution to this?