remove the changes to mail.from.address default

Author: Godmartinz

config/mail.php

@@ -237,7 +237,7 @@
     */
 
     'from' => [
-        'address' => env('MAIL_FROM_ADDR', env('MAIL_ENV_FROM_ADDR')),
+        'address' => env('MAIL_FROM_ADDR', null),
         'name' => env('MAIL_FROM_NAME', null),
     ],