Remove fetch mode option.

config/database.php

@@ -2,19 +2,6 @@
 
 return [
 
-    /*
-    |--------------------------------------------------------------------------
-    | PDO Fetch Style
-    |--------------------------------------------------------------------------
-    |
-    | By default, database results will be returned as instances of the PHP
-    | stdClass object; however, you may desire to retrieve records in an
-    | array format for simplicity. Here you can tweak the fetch style.
-    |
-    */
-
-    'fetch' => PDO::FETCH_OBJ,
-
     /*
     |--------------------------------------------------------------------------
     | Default Database Connection Name