Removed the "ci_reporter" gem dependency and Rake tasks

Author: karmi

elasticsearch-dsl.gemspec

@@ -32,7 +32,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'minitest', '~> 5'
   s.add_development_dependency 'minitest-reporters', '~> 1'
   s.add_development_dependency 'simplecov'
-  s.add_development_dependency 'ci_reporter', '~> 1.9'
   s.add_development_dependency 'yard'
   s.add_development_dependency 'cane'
   s.add_development_dependency 'pry'