rubype.gemspec in haskell-0.2.2 vs rubype.gemspec in haskell-0.2.3

@@ -6,10 +6,9 @@
 Gem::Specification.new do |spec|
   spec.name          = "haskell"
   spec.version       = Haskell::VERSION
   spec.authors       = ["gogotanaka"]
   spec.email         = ["[e-mail]"]
-  spec.extensions    = ["ext/haskell/extconf.rb"]
   spec.summary       = %q{Ruby with type.}
   spec.description   = %q{Ruby with type.}
   spec.homepage      = "http://gogotanaka.me/"
   spec.license       = "MIT"