[GHC] #11791: Remove the `isInlinePragma prag` test

[GHC]

#11791: Remove the `isInlinePragma prag` test
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        Reporter:  nomeata           |                Owner:
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:  newcomer,
                                     |  Inlining
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #11781, #5928     |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by mpickering):

 * keywords:   => newcomer, Inlining


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11791#comment:1>
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