you can't "remove" it from a work. I am not a lawyer, but I believe you are mistaken. In the US, so long as your are the legitimate holder of the copyright yo

you can't "remove" it from a work. I am not a lawyer, but I believe you are mistaken. In the US, so long as your are the legitimate holder of the copyright you may voluntarily waive all rights and surrender the work to the public domain. You may also user certain licenses such as those proposed by the Creative Commons which waive most rights without actually releasing it to the public domain. Certain other countries are slightly different in that they recognize "Moral rights" that are perpetual and unwaivable.