magento#15588: Remove extra line from if

Author: dmanners

app/code/Magento/Sitemap/Controller/Adminhtml/Sitemap/Generate.php

@@ -43,7 +43,6 @@ public function execute()
         $sitemap->load($id);
         // if sitemap record exists
         if ($sitemap->getId()) {
-            
             try {
                 //We need to emulate to get the correct frontend URL for the product images
                 $this->appEmulation->startEnvironmentEmulation(