remove news category from the example article

Author: ArturT

_posts/2099-01-31-example-article.md

@@ -3,7 +3,7 @@ layout: post
 title:  "Example article"
 date:   2099-01-31 12:00:00 +0100
 author: "Artur Trzop"
-categories: techtips continuous_integration news
+categories: techtips continuous_integration
 og_image: "/images/blog/posts/example-article/image.jpg"
 published: false
 ---