Release from the Project?

You need to ask your supervisor who will ask the reason for the same...Cc requires only when they aren't okay with the same keeping their seniors in to that column ..But you should be clear and specific in terms of mentioning the reason and it also depends on your dependency as well ..Or else just stop doing work leaving them no other option than releasing you from the same but this depends on project by project..The best way to get rid of this is move on by preparing for switch to somewhere else ...