[GHC] #9194: Remove magic parsing of (~)

[GHC]

#9194: Remove magic parsing of (~)
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        Reporter:  goldfire          |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.8.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by goldfire):

 I suppose this means that it should be exported from `Prelude` and be
 hidable, available for user definitions, etc.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9194#comment:1>
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