[GHC] #11660: Remove Type pretty-printer in favor of IfaceType

[GHC]

#11660: Remove Type pretty-printer in favor of IfaceType
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           Reporter:  bgamari        |             Owner:
               Type:  task           |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  7.10.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 The `Type` pretty-printer has a fair amount of code in common with the
 pretty-printer for `IfaceType`. Moreover, both cases handle a number of
 special cases. With the introduction of `-fprint-explicit-runtime-reps`
 (Phab:D1961), there is now an inconsistency between these two.

 Let's resolve this inconsistency by eliminating the `Type` pretty-printer
 in favor of using the `IfaceType` printer.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11660>
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