Some people are as thick as two short planks. I have Vista and I could delete my soundpack, so I can tell that this guy is either a troll, or a dimwit.
amen
If you could read you would know he's talking about you.
You said you can't delete on other operating systems. You clearly can.
But what Otis was trying to say, not matter how much you delete it. When you join another server you end up getting the defaults redownloaded into a new directory.