[GHC] #9094: remove RAW_CPP

[GHC]

#9094: remove RAW_CPP
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       Reporter:  carter            |             Owner:
           Type:  task              |            Status:  new
       Priority:  normal            |         Milestone:  7.10.1
      Component:  Compiler          |           Version:  7.8.2
       Keywords:                    |  Operating System:  Unknown/Multiple
   Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
     Difficulty:  Unknown           |         Test Case:
     Blocked By:  8683              |          Blocking:
Related Tickets:  #8683             |
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 once the CPP settings ticket is merged #8683
 one cleanup task is to remove the RAW_CPP bits from the ghc build system
 because they're not longer needed

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9094>
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