remove debug dependency

Author: jsonbailey

launchdarkly-server-sdk-ai.gemspec

@@ -24,7 +24,6 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'mustache', '~> 1.1'
 
   spec.add_development_dependency 'bundler', '~> 2.0'
-  spec.add_development_dependency 'debug', '~> 1.0'
   spec.add_development_dependency 'rake', '~> 13.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'rubocop', '~> 1.21'