that is how the law works. Stated cases will remain on the books, common law too.
Much Euro law is just codification of political direction, rather than necessary to the daily lives of people. Much of it is not even enforced.
Laws are repealed all the time. Authorities simply look to the existing and ancient laws/rulings to handle the gaps. We had no trouble dealing with terrorists in the past...Euro laws simply got in the way what with dealing with feelings and race tying up real police work with paperwork and stats.