Shift config files

config/services.php

@@ -8,7 +8,7 @@ return [
     |--------------------------------------------------------------------------
     |
     | This file is for storing the credentials for third party services such
-    | as Mailgun, SparkPost and others. This file provides a sane default
+    | as Mailgun, Postmark, AWS and more. This file provides the de facto
     | location for this type of information, allowing packages to have
     | a conventional file to locate the various service credentials.
     |
@@ -30,8 +30,4 @@ return [
         'region' => env('AWS_DEFAULT_REGION', 'us-east-1'),
     ],
 
-    'sparkpost' => [
-        'secret' => env('SPARKPOST_SECRET'),
-    ],
-
 ];