remove rubocop, because it needs Ruby 2.0 later. I will drop Ruby 1.9 and JRuby 1.7 at 2017/3

hsbt · hsbt · commit c1e83191f0b1 · 2016-12-06T20:20:08.000+09:00
diff --git a/rake.gemspec b/rake.gemspec
@@ -36,5 +36,4 @@ Rake has the following features:
   s.add_development_dependency(%q<bundler>.freeze)
   s.add_development_dependency(%q<minitest>.freeze)
   s.add_development_dependency(%q<rdoc>.freeze)
-  s.add_development_dependency(%q<rubocop>.freeze)
 end
