[GHC] #11758: Drop x86_64 binutils <2.17 hack

[GHC]

#11758: Drop x86_64 binutils <2.17 hack
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  avd
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler (NCG)    |              Version:  8.0.1-rc2
      Resolution:                    |             Keywords:  newcomer
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 rwbarton):

 This hack is responsible for #12433. However, there is also perhaps an
 argument for taking advantage of the small code model where possible to
 generate jump tables of half the size.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11758#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler