Remove now unused cbits

Author: ethercrow

benchmarks/unordered-containers-benchmarks.cabal

@@ -6,16 +6,12 @@ cabal-version: >=1.2
 
 executable unordered-containers-benchmarks
   ghc-options: -Wall -O2
-  cc-options: -msse4.1
-  c-sources:
-    ../cbits/popc.c
   hs-source-dirs: .. .
   main-is: Benchmarks.hs
   other-modules:
     Data.HashMap.Array
     Data.HashMap.Base
     Data.HashMap.Lazy
-    Data.HashMap.PopCount
     Data.HashMap.Strict
     Data.HashMap.Unsafe
     Data.HashMap.UnsafeShift