don't catch irrelevant errors

Application/Controller/Admin/MailConfigCheck.php

@@ -87,13 +87,6 @@ class MailConfigCheck extends AdminDetailsController
 
     protected function getCurrentMailer(): void
     {
-        set_error_handler(
-            function ($errno, $errstr, $errfile, $errline) {
-                throw oxNew(Exception::class, $errstr.' in '.$errfile.'('.$errline.')', $errno);
-            },
-            E_ALL & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED
-        );
-
         try {
             $shop = Registry::getConfig()->getActiveShop();