Gemfile in rbs-1.0.3 vs Gemfile in rbs-1.0.4

@@ -4,10 +4,9 @@
 gemspec
 
 # Development dependencies
 gem "rake"
 gem "test-unit"
-gem "test-unit-rr"
 gem "rspec"
 gem "racc"
 gem "rubocop"
 gem "rubocop-rubycw"
 gem "json"