[GHC] #13681: Remove deprecated ForceSpecConstr

[GHC]

#13681: Remove deprecated ForceSpecConstr
-------------------------------------+-------------------------------------
           Reporter:  mpickering     |             Owner:  (none)
               Type:  task           |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.1
           Keywords:  SpecConstr     |  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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 There is a note at the top of `SpecConstr` which says

 {{{
   ToDo [Oct 2013]
   ~~~~~~~~~~~~~~~
   1. Nuke ForceSpecConstr for good (it is subsumed by GHC.Types.SPEC in
 ghc-prim)
   2. Nuke NoSpecConstr
 }}}

 `ForceSpecConstr` still exists so this ticket is to track the progress
 made on removing it.

 It isn't clear to me why it is ok to get rid of `NoSpecConstr` (which
 prevents SpecConstr firing) either.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13681>
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