diff --git a/layout--onecol.html.twig b/layout--onecol.html.twig
deleted file mode 100644
index 01d61e0..0000000
--- a/layout--onecol.html.twig
+++ /dev/null
@@ -1,26 +0,0 @@
-{#
-/**
- * @file
- * Default theme implementation to display a one-column layout.
- *
- * Available variables:
- * - in_preview: Whether the plugin is being rendered in preview mode.
- * - content: The content for this layout.
- * - attributes: HTML attributes for the layout <div>.
- *
- * @ingroup themeable
- */
-#}
-{%
-  set classes = [
-    'layout',
-    'layout--onecol',
-  ]
-%}
-{% if content %}
-  <div{{ attributes.addClass(classes) }}>
-    <div {{ region_attributes.content.addClass('layout__region', 'layout__region--content') }}>
-      {{ content.content }}
-    </div>
-  </div>
-{% endif %}