I don't know how to remove it. But I do know how to prevent it, that is put your guitar and stop playing it. What I'm going to say next is not aiming at you personally at all. Please don't take it personally. And if you feel offended, I apologize. I just feel that sometimes people go crazy over some trivial, unimportant stuff. A real player shouldn't and won't waste his/her time worrying about things like the issue in question because he/she knows the real purpose of owning a guitar, which is making music. Happy Playin'~