Remove benchmarks

We don't really need this.

hpath.cabal

@@ -12,7 +12,6 @@ build-type:          Simple
 cabal-version:       >=1.14
 extra-source-files:  README.md
                      CHANGELOG
-                     benchmarks/*.hs
                      cbits/dirutils.h
                      doctests-hpath.hs
                      doctests-posix.hs
@@ -103,23 +102,6 @@ test-suite spec
                       , unix-bytestring
                       , utf8-string
 
-benchmark bench.hs
-  default-language: Haskell2010
-  type: exitcode-stdio-1.0
-  hs-source-dirs: benchmarks
-  main-is:        Bench.hs
-
-  build-depends:
-      base,
-      hpath,
-      bytestring,
-      unix,
-      directory  >= 1.1 && < 1.3,
-      filepath   >= 1.2 && < 1.5,
-      process    >= 1.0 && < 1.3,
-      criterion  >= 0.6 && < 1.2
-  ghc-options: -O2
-
 source-repository head
   type:     git
   location: https://github.com/hasufell/hpath