How do you go about removing the glossiness from custom textures for races?

[vampireteddygram]

I know that with weapons and armor you can simply disable the specular map, but I cannot find an option like that for races. I think I remember someone thinking it was somehow baked into the normal map, if so could someone explain to me how I would get around that?

[someone]

The gloss map is the alpha channel of the diffuse texture. This is the same for every material in the game.