I'm not so sure about that. Read Hebrews chapter 7. Paul starts off talking about how Abraham tithed to Melchizedek even though Melchizedek wasn't a member of the Levi tribe. He then starts talking about the Levitical priesthood recieving tithes and how the law about tithing has to be changed (not abolished) now that the levitical priesthood was fading away. Since God's people are to become "kings and priests" in the milleniel kingdom, Paul might be saying that the tithes should now be going to the new priesthood that has Jesus Christ as the high priest in heaven.
It's a tough chapter to read, I tried King James, New King James, Modern King James and a few other translations and still kept getting lost...the best translation I found was the "God's Word" translation.