Remove duplicated gem

DirtyF · DirtyF · commit eae43fae0c71 · 2018-01-25T23:58:40.000+01:00
diff --git a/Gemfile b/Gemfile
@@ -11,5 +11,3 @@ end
 
 # Support for Ruby < 2.2.2 & activesupport
 gem "activesupport", "~> 4.2" if RUBY_VERSION < "2.2.2"
-
-gem "github-pages", :group => :jekyll_plugins
