Rm date indicators and >1 year inactive sites

site/_docs/sites.md

@@ -9,17 +9,13 @@ with. Below are some Jekyll-powered blogs which were hand-picked for
 learning purposes.
 
 - [Tom Preston-Werner](http://tom.preston-werner.com/)
-    ([source](https://github.com/mojombo/mojombo.github.io)) (last commit [87f9f24](https://github.com/mojombo/mojombo.github.io/commit/87f9f24) at 20 June 2015)
-- [Nick Quaranto](http://quaran.to/)
-    ([source](https://github.com/qrush/qrush.github.com)) (last commit [c569be1](https://github.com/qrush/qrush.github.com/commit/c569be159c4c1075e8bf65b1995e43b262c86899) at 2 December 2014)
+    ([source](https://github.com/mojombo/mojombo.github.io))
 - [GitHub Official Teaching Materials](http://training.github.com)
-    ([source](https://github.com/github/training.github.com/tree/7049d7532a6856411e34046aedfce43a4afaf424)) (last commit [7049d75](https://github.com/github-archive/training.github.com/commit/7049d7532a6856411e34046aedfce43a4afaf424) at 20 December 2013)
+    ([source](https://github.com/github/training-kit))
 - [Rasmus Andersson](http://rsms.me/)
-    ([source](https://github.com/rsms/rsms.github.com)) (last commit [30e0555](https://github.com/rsms/rsms.github.com/commit/30e0555d3f22af951839e308c68ee548f6c03492) at 1 December 2015)
-- [Scott Chacon](http://schacon.github.com)
-    ([source](https://github.com/schacon/schacon.github.com)) (last commit [e7396ba](https://github.com/schacon/schacon.github.com/commit/e7396ba8eb964634c24a417c8b86c5c9a251a9fd) at 2 April 2011)
+    ([source](https://github.com/rsms/rsms.github.com))
 - [Leonard Lamprecht](http://leo.im)
-    ([source](https://github.com/leo/leo.github.io)) (frequently updated)
+    ([source](https://github.com/leo/leo.github.io))
 
 If you would like to explore more examples, you can find a list of sites
 and their sources on the ["Sites" page in the Jekyll wiki][jekyll-sites].