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

[GHC]

#11660: Remove Type pretty-printer in favor of IfaceType
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by goldfire):

 Yes, this duplication has been annoying. I worry a bit in choosing to
 prioritize `IfaceType` over `Type` because `Type` can do more (that is, we
 have `typeKind` to hand). But perhaps it will enforce better pretty-
 printing hygiene to have fewer capabilities...

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11660#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler