I'm not sure that is accurate. Many of the things condemned in the Torah are also condemned in the New Testament. Some Christians subscribe to the idea that the new abolishes the old completely but I think that's a Protestant perspective. Some might subscribe to the idea that what is Not Explicitly changed or condemned in the NT still holds, others might say that whatever the NT reconfirms from the OT still holds. I honestly could not tell you the official RC or Orthodox position on the OT is.
It certainly replaced the Jewish calendar and holidays (and the commandments and rituals for each).