[GHC] #9402: Vestigial external core code in genprimops

[GHC]

#9402: Vestigial external core code in genprimops
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       Reporter:  goldfire           |                   Owner:
           Type:  bug                |                  Status:  new
       Priority:  normal             |               Milestone:
      Component:  Compiler           |                 Version:  7.9
       Keywords:                     |        Operating System:
   Architecture:  Unknown/Multiple   |  Unknown/Multiple
     Difficulty:  Unknown            |         Type of failure:
     Blocked By:                     |  None/Unknown
Related Tickets:                     |               Test Case:
                                     |                Blocking:
                                     |  Differential Revisions:
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 It looks like `gen_ext_core_source` in `utils/genprimopcode/Main.hs` is no
 longer needed. I'm not quite confident enough here to make the change
 myself, though.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9402>
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