Use Newsletter Link Entity in Stats Notifications

[MAILPOET-2439]

lib/Models/NewsletterLink.php

@@ -12,27 +12,4 @@ namespace MailPoet\Models;
 class NewsletterLink extends Model {
   public static $_table = MP_NEWSLETTER_LINKS_TABLE;
   const UNSUBSCRIBE_LINK_SHORT_CODE = '[link:subscription_unsubscribe_url]';
-
-  /**
-   * @param Newsletter $newsletter
-   * @return NewsletterLink|null
-   */
-  static function findTopLinkForNewsletter(Newsletter $newsletter) {
-    $link = self::selectExpr('links.*')
-      ->selectExpr('count(*)', 'clicksCount')
-      ->tableAlias('links')
-      ->innerJoin(StatisticsClicks::$_table,
-        ['clicks.link_id', '=', 'links.id'],
-        'clicks')
-      ->where('newsletter_id', $newsletter->id())
-      ->groupBy('links.id')
-      ->orderByDesc('clicksCount')
-      ->limit(1)
-      ->findOne();
-    if (!$link) {
-      return null;
-    }
-    return $link;
-  }
-
 }