!Crystalite armour is hidden with the pack on.

I made this for personal use, but all it does is just disable the textures for the crystalite armour. It's really, really simple (I didn't do anything here, haha--)

All versions other than 1.21.1 are untested, but I do feel like as the resource pack is extremely, extremely simple, I don't think much has changed throughout the versions, which is why I am comfortable saying that it probably works on any given version (unless the ID for crystalite armour has changed between now and then.)