relaton_ietf.gemspec in relaton-ietf-0.7.2 vs relaton_ietf.gemspec in relaton-ietf-0.7.3

@@ -27,10 +27,9 @@
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
   spec.required_ruby_version = Gem::Requirement.new(">= 2.4.0")
 
-  spec.add_development_dependency "bundler", "~> 2.0.1"
   spec.add_development_dependency "debase"
   spec.add_development_dependency "equivalent-xml", "~> 0.6"
   spec.add_development_dependency "pry-byebug"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.0"