remove gunky code

_pages/presentations.md

@@ -6,11 +6,10 @@ classes: wide
 
 <link rel="stylesheet" href="{{ '/assets/css/custom.css' | relative_url }}">
 
-{% assign sorted_presentations =  site.presentations  | group_by_exp: "presentation", "presentation.date | date: '%Y'" | reverse %}
+{% assign presentations_by_year = site.presentation | group_by_exp: "presentation", "presentation.date | date: '%Y'" | reverse %}
 
 <h2> 2020-Present &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href="{{ '/pres_2010s/' | relative_url }}" >2010-2019</a> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href="{{ '/pres_2000s/' | relative_url }}" >2000-2009</a> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href="{{ '/pres_1990s/' | relative_url }}" >1990-1999</a>  </h2>
 
-{% assign presentations_by_year = site.presentations | group_by: "year" %}
 {% for year_group in presentations_by_year %}
 
 {% assign year = year_group.name | plus: 0 %}