remove bundler development dependency

Author: wjordan

aws-google.gemspec

@@ -26,7 +26,6 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'launchy', '~> 2'
 
   spec.add_development_dependency 'activesupport', '~> 5'
-  spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'minitest', '~> 5.14.2'
   spec.add_development_dependency 'mocha', '~> 1.5'
   spec.add_development_dependency 'rake', '~> 12'