Cleanup: Remove URL from category_list_header component.

src/templates/films.pug

@@ -23,7 +23,7 @@ include mixins/components
 
 | {% block body %}
 .container.py-4
-	+category_list_header('{{ page_title }}', '{{ page_description }}', '{{ request.url }}')
+	+category_list_header('{{ page_title }}', '{{ page_description }}')
 
 	.row.films-list
 		| {% for project in projects %}

src/templates/learn.pug

@@ -17,7 +17,7 @@ include mixins/components
 
 | {% block body %}
 .container.py-4
-	+category_list_header('{{ page_title }}', '{{ page_description }}', '{{ request.url }}')
+	+category_list_header('{{ page_title }}', '{{ page_description }}')
 
 	+category_list_item(
 		'COURSES',

src/templates/mixins/components.pug

@@ -1,10 +1,11 @@
-//- Category listing header (Learn, Libraries, etc).
-mixin category_list_header(title, text, url)
+//- Category listing (Learn, Libraries, etc).
+//- Header
+mixin category_list_header(title, text)
 	.row.pt-2
 		.col-md-9
-			a.d-block.py-2.text-secondary(href=url, title=title)
-				h1.text-uppercase.font-weight-bold
-					=title
+			h1.py-2.text-uppercase.font-weight-bold
+				=title
+
 			.lead
 				=text