Laws tend to get more complex over time - laws are amended, rather than removed.
If there was a historical law about (e.g.) coverting, then we would still see signs of it on the law books.
I don't know if there's ever been a law about coveting (how could it be enforced), but the rest that I'm talking about are hardly obscure. Of course laws are abandoned - many countries have completely rewritten their legal codes. The Czech Criminal and Civil Codes, for instance, are very recent - they're amended from the Communist era codes, which were themselves de novo creations. Sure, they are influenced by old legal traditions and older laws, but some bits - such as laws regarding blasphemy, are simply gone.
Amongst countries like Britain with different legal systems, where the ancient bits cling around in statute law long after they become enforceable, the laws are still on the books. Old laws about blasphemy and the preservation of the Sabbath are still there to read, even if they've been superseded by recent laws. There was an attempt to bring a blasphemy prosecution in England fairly recently, which the judge angrily dismissed as a waste of time, so the law was formally abolished as part of the Criminal Justice and Immigration Act 2008.
It's all well and good to say that these laws (murder and theft and whatnot) are part of standard human morality, but I'm not so sure that blasphemy is. When Christian people put these things in the legal codes, quoting the Bible as they did so, I think it's safe to argue them as coming from the Ten Commandments.