[GHC] #7756: Remove warning suppressions from compiler/cmm/CmmCommonBlockElim.hs

[GHC]

#7756: Remove warning suppressions from compiler/cmm/CmmCommonBlockElim.hs
-----------------------------+----------------------------------------------
Reporter:  bosu              |          Owner:                  
    Type:  task              |         Status:  new             
Priority:  normal            |      Component:  Compiler        
 Version:  7.7               |       Keywords:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown      |      Blockedby:                  
Blocking:                    |        Related:                  
-----------------------------+----------------------------------------------
 It compiles fine without them now.

 The patch is attached

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7756>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler