Gemfile in git-semaphore-2.6.1 vs Gemfile in git-semaphore-2.7.0

@@ -1,6 +1,4 @@
 source 'https://rubygems.org'
 
-git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
-
 # Specify your gem's dependencies in git-semaphore.gemspec
 gemspec