diff --git a/includes/form.inc b/includes/form.inc
index bea4914..732ed9b 100644
--- a/includes/form.inc
+++ b/includes/form.inc
@@ -3699,20 +3699,6 @@ function theme_vertical_tabs($variables) {
 }
 
 /**
- * Returns HTML for a submit button form element.
- *
- * @param $variables
- *   An associative array containing:
- *   - element: An associative array containing the properties of the element.
- *     Properties used: #attributes, #button_type, #name, #value.
- *
- * @ingroup themeable
- */
-function theme_submit($variables) {
-  return theme('button', $variables['element']);
-}
-
-/**
  * Returns HTML for a button form element.
  *
  * @param $variables