Remove Highlights box in blog

Author: adpi2

_includes/blog-list.html

@@ -39,37 +39,5 @@ <h2><a href="{{post.url}}">{{post.title}}</a></h2>
 			{% assign urlPath = urlPath | split: '/' | join: '/' | remove_first: '/' %}
 			{% include paginator.html urlPath=urlPath %}
 		</div>
-		{% assign highlights = "" | split: "," %}
-		{% for post in site.posts %}
-			{% if post.isHighlight == true %}
-				{% assign highlights = highlights | push: post %}
-			{% endif %}
-		{% endfor %}
-
-		{% for post in highlights %}
-			{% if forloop.first %}
-				<div class="content-nav-blog">
-					<div class="inner-box">
-						<h5>Highlights</h5>
-						<div class="blog-list-nav">
-			{% endif %}
-			<div class="blog-list-nav-item">
-				<h4><a href="{{post.url}}">{{post.title}}</a></h4>
-				{% if post.by %}<p>{{post.by}}</p>{% endif %}
-				{% if post.tags %}
-					{% for tag in post.tags %}
-						<ul class="tag-list">
-							<li class="tag-item">{{tag}}</li>
-						</ul>
-					{% endfor %}
-				{% endif %}
-			</div>
-			{% if forloop.last %}
-						</div>
-					</div>
-				</div>
-			{% endif %}
-		{% endfor %}
-
 	</div>
 </section>

_posts/2016-12-07-implicit-function-types.md

@@ -2,7 +2,6 @@
 category: blog
 title: Implicit Function Types
 by: Martin Odersky
-isHighlight: true
 ---
 
 I just made the [first pull request](https://github.com/scala/scala3/pull/1775) to add _implicit function types_ to

_posts/2016-12-13-sip-and-advisor-meetings.md

@@ -3,7 +3,6 @@ category: blog
 title: "Scala Center Advisory Board and SIP Meeting Results"
 by: Seth Tisue
 tags: ["scala center", "meetings"]
-isHighlight: true
 ---
 
 Brief summaries of both meetings follow, with links to

_posts/2019-12-18-road-to-scala-3.md

@@ -3,7 +3,6 @@ layout: blog-detail
 post-type: blog
 by: Lukas Rytz, Adriaan Moors, Martin Odersky
 title: "Scala 2 Roadmap Update: the Road to Scala 3"
-isHighlight: true
 ---
 
 Together with the Scala 3 team at EPFL (aka the Dotty team), led by Martin Odersky, we have decided that, rather than developing Scala 2.14, our efforts should go to Scala 3 instead.

_posts/2021-01-12-configuring-and-suppressing-warnings.md

@@ -3,7 +3,6 @@ layout: blog-detail
 post-type: blog
 by: Lukas Rytz
 title: "Configuring and suppressing warnings in Scala"
-isHighlight: true
 ---
 
 Scala 2.13.2 introduced the `-Wconf` compiler flag to globally configure reporting of warnings, and the `@nowarn` annotation to locally suppress them. This addition to Scala 2.13 proved very popular, so it was backported to 2.12 and just released in 2.12.13. Having more control over compiler warnings makes them a lot more valuable: