Remove statements that cannot be executed

lib/Newsletter/Shortcodes/Categories/Subscriber.php

@@ -16,24 +16,19 @@ class Subscriber {
     switch($action) {
       case 'firstname':
         return ($subscriber) ? $subscriber['first_name'] : $default_value;
-        break;
       case 'lastname':
         return ($subscriber) ? $subscriber['last_name'] : $default_value;
-        break;
       case 'email':
         return ($subscriber) ? $subscriber['email'] : false;
-        break;
       case 'displayname':
         if($subscriber && $subscriber['wp_user_id']) {
           $wp_user = get_userdata($subscriber['wp_user_id']);
           return $wp_user->user_login;
         }
         return $default_value;
-        break;
       case 'count':
         return SubscriberModel::filter('subscribed')
           ->count();
-        break;
       default:
         if(preg_match('/cf_(\d+)/', $action, $custom_field) &&
           !empty($subscriber['id'])
@@ -45,7 +40,6 @@ class Subscriber {
           return ($custom_field) ? $custom_field->value : false;
         }
         return false;
-        break;
     }
   }
-}
+}