Remove redgreen gem as reflect of #204, 093a5ef (#6720)
Remove redgreen gem as reflect of #204, 093a5ef (#6720)

Merge pull request 6720
jekyll/jekyll,x-way/jekyll,getandpost/jekyll.github.io,tillgrallert/jekyll,chrisfinazzo/jekyll,Strangehill/jekyll,getandpost/jekyll.github.io,jaybe-jekyll/jekyll,Strangehill/jekyll,fulldecent/jekyll,yhironaka/yhironaka.github.io,jekyll/jekyll,tillgrallert/jekyll,Strangehill/jekyll,x-way/jekyll,x-way/jekyll,x-way/jekyll,tillgrallert/jekyll,jaybe-jekyll/jekyll,chrisfinazzo/jekyll,fulldecent/jekyll,tillgrallert/jekyll,jekyll/jekyll,jekyll/jekyll,Strangehill/jekyll,jaybe-jekyll/jekyll,fulldecent/jekyll,fulldecent/jekyll,tillgrallert/jekyll,ryanshaw/jekyll,jaybe-jekyll/jekyll,chrisfinazzo/jekyll,Strangehill/jekyll,getandpost/jekyll.github.io,chrisfinazzo/jekyll,ryanshaw/jekyll,ryanshaw/jekyll,ryanshaw/jekyll