It is a "Screen Protector" which has been afixed from the factory. I don't think it is glued down, as in permanent, heck most of us just found out about it within the last week or so. Why you may ask, because no company has ever done this, well at least as far as my limited noob knowledge knows. I actually think that was a pretty cool thing they did. The screen is actually GLASS, which a lot of screens are not now a days. The screen is also "Scratch Resistant". But I wouldn't be giving the treatment test to check out that theory. I baby my phones, for example, I just switched from the iPhone. The one I had was the one one released in the summer of 2007. Not a single scratch, blemish or mark any where on it, and I never used a Screen Protector.
Why are you trying to remove yours? Is it scratched up already? Where did you here it was glued? I mean there is some sort of adhesive used that makes it stick to the screen, but all Screen Protectors are made that way, it is the only way they will stay in place.
Gunny