remove unused variable

files/templates/userpage/userpage.html

@@ -3,7 +3,6 @@
 {% block pagetitle %}@{{u.username}}'s profile{% endblock %}
 {% block head_final %}
 	{% if u and u.profile_background %}
-		{% set displaying_bg = True %}
 		<link rel="stylesheet" href="{{('css/transparent.css') | asset}}">
 	{% endif %}
 	{% if u and (u.profilecss or u.profile_background) and not request.values.get('nocss') %}

files/templates/util/html_head.html

@@ -147,7 +147,6 @@
 		{% endif %}
 
 		{% if background %}
-			{% set displaying_bg = True %}
 			<link rel="stylesheet" href="{{('css/transparent.css') | asset}}">
 		{% endif %}
 	{% endif %}