Remove a dead variable, `$start`, from `wp_dashboard_recent_comments()`.

See #27882.


Built from https://develop.svn.wordpress.org/trunk@28263


git-svn-id: http://core.svn.wordpress.org/trunk@28091 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/dashboard.php

@@ -765,7 +765,6 @@ function wp_dashboard_recent_comments( $total_items = 5 ) {
 
 	// Select all comment types and filter out spam later for better query performance.
 	$comments = array();
-	$start = 0;
 
 	$comments_query = array(
 		'number' => $total_items * 5,
@@ -786,8 +785,6 @@ function wp_dashboard_recent_comments( $total_items = 5 ) {
 		$comments_query['number'] = $total_items * 10;
 	}
 
-
-
 	if ( $comments ) {
 		echo '<div id="latest-comments" class="activity-block">';
 		echo '<h4>' . __( 'Comments' ) . '</h4>';