WordPress - Add custom RSS feeds to dashboard

functions.php

/* ========================================== */
// Add this code to theme's functions.php
// It removes the default WordPress feeds and adds your custom feeds to the admin dashboard.
/* ========================================== */
function dcg_dashboard_widgets() {  
     global $wp_meta_boxes;  
     // remove unnecessary widgets  
     // var_dump( $wp_meta_boxes['dashboard'] ); // use to get all the widget IDs  
     unset(  
          $wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins'],  
          $wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary'],  
          $wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']  
     );  
     // add a custom dashboard widget  
     wp_add_dashboard_widget( 'dashboard_custom_feed', 'News from Dipak C. Gajjar', 'dcg_dashboard_custom_feed' ); // add new RSS feed output  
}  
function dcg_dashboard_custom_feed() {  
     echo '<div class="rss-widget">';  
     wp_widget_rss_output(array(  
          'url' => 'http://dipakgajjar.com/feed/', // Feed URL
          'title' => 'News from Dipak C. Gajjar',  
          'items' => 4,  
          'show_summary' => 1,  
          'show_author' => 0,  
          'show_date' => 1   
     ));  
     echo "</div>";  
}  
add_action('wp_dashboard_setup', 'dcg_dashboard_widgets');