refactor: Remove custom academia layout

layouts/academia/list.html

@@ -1,20 +0,0 @@
-{{ define "main" }}
-  {{ partial "scrolling-image-header" . }}
-  <section class="container-fluid list-main">
-    <div class="container px-5">
-      <h2>Selected Presentations</h2>
-      {{ $featuredpubs := where .Pages ".Params.featured" "==" true }}
-      {{ range $featuredpubs }}
-        {{ .Scratch.Set "showAbstract" true }}
-        {{ partial "academia/list-single.html" . }}
-      {{ end }}
-      <hr />
-      <h2>Other Presentations</h2>
-      {{ $nonfeaturedpubs := where .Pages ".Params.featured" "==" false }}
-      {{ range $nonfeaturedpubs }}
-        {{ partial "academia/list-single.html" . }}
-      {{ end }}
-
-    </div>
-  </section>
-{{ end }}