[GHC] #8330: Remove ExtsCompat46 module once we bootstrap with GHC 7.8

[GHC]

#8330: Remove ExtsCompat46 module once we bootstrap with GHC 7.8
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        Reporter:  jstolarek         |                   Owner:
            Type:  task              |                  Status:  new
        Priority:  highest           |               Milestone:  7.12.1
       Component:  Compiler          |                 Version:  7.7
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by Thomas Miedema <thomasmiedema@…>):

 In [changeset:"37a0b50b5e28a326159bb464effb499c1d9de775/ghc" 37a0b50/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="37a0b50b5e28a326159bb464effb499c1d9de775"
 Delete ExtsCompat46 (#8330)

 We require ghc-7.8 to build HEAD (ghc-7.11).

 Differential Revision: https://phabricator.haskell.org/D1165
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8330#comment:3>
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