removed condition for old version of rubygems

Author: hsbt

syck.gemspec

@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
   s.test_files = Dir["test/**/*.rb"]
   s.rdoc_options = ["--main", "README.rdoc"]
   s.required_ruby_version = Gem::Requirement.new(">= 2.0.0")
-  s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
+  s.required_rubygems_version = Gem::Requirement.new(">= 0.9.5")
   s.rubygems_version = "2.0.3"
 
   s.add_development_dependency(%q<bundler>, ["~> 1.11"])