You joined in january, and have 5 posts. Doesnt seem like you visit the site much, so the best way to go about removing yourself from the site, is to stop coming? You can request a moderator to delete your account and threads I guess, then ban you from the site, so even if you accidently type in the site name, you wont come back.
On another note, its best to use all the resources available to you. There are plenty of other forums that could help you in your situation. Dont say that you dont like this site when we cant answer your question. We may be able to answer a question that another site cannot. Dont rely on one group to get ALL of the information you think you need, although you could possibly get the majority at one place.