Remove references to wp-ajax.php. props TobiasBg, fixes #12400

git-svn-id: https://develop.svn.wordpress.org/trunk@13831 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/general-template.php

@@ -718,7 +718,7 @@ function single_tag_title($prefix = '', $display = true ) {
 	if ( !is_tag() )
 		return;
 
-	$tag = $wp_query->get_queried_object();;
+	$tag = $wp_query->get_queried_object();
 
 	if ( ! $tag )
 		return;

wp-includes/link-template.php

@@ -2037,26 +2037,6 @@ function rel_canonical() {
 	echo "<link rel='canonical' href='$link' />\n";
 }
 
-/**
- * Prints the ajax url on the front end
- *
- * @since 3.0.0
- **/
-function _wp_ajaxurl() {
-	echo '<script type="text/javascript">',
-			"var ajaxurl = '", esc_js(site_url('wp-ajax.php')), "';",
-		"</script>\n";
-}
-
-/**
- * Hooks _wp_ajaxurl() to wp_head
- *
- * @since 3.0.0
- **/
-function wp_ajaxurl() {
-	add_action('wp_head', '_wp_ajaxurl', 1);
-}
-
 /**
  * Return a shortlink for a post, page, attachment, or blog.
  *