[GHC] #12532: Remove sum and tuple names from knownKeyNames

[GHC]

#12532: Remove sum and tuple names from knownKeyNames
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        Reporter:  bgamari           |                Owner:
            Type:  task              |               Status:  closed
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.0.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2467
       Wiki Page:                    |
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Comment (by simonpj):

 Also hooray!  Long saga here!

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12532#comment:8>
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