I live in a residential neighborhood where mail delivery is all one side. The other side of the block is a school that has been torn down and is a neighborhood park now. The mailbox belonging to the former school sits on my property at the edge. I'm getting ready to do some lanscaping. Now that the school is gone, can I take down the mailbox? Or do I need to get the Post Office to do it for me? I know tampering with mail is an offense in the USA and don't want to inadvertantly break the law.