patch applied (packages/Cabal): Remove a couple old deprecated empty modules

[Ian Lynagh]

Thu Jun 26 12:52:04 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Remove a couple old deprecated empty modules

    M ./Cabal.cabal -2
    R ./Distribution/Extension.hs
    R ./Distribution/Setup.hs

View patch online:
http://darcs.haskell.org/packages/Cabal/_darcs/patches/20080626195204-adfee-2d5d5888e4823d966e0588bff4e1e22d982471b8.gz