Remove Stripe config settings

These now ship with a dedicated config file for Cashier.

laravel/laravel@83d2ecc
laravel/laravel@bb43372

config/services.php

@@ -8,9 +8,9 @@
     |--------------------------------------------------------------------------
     |
     | This file is for storing the credentials for third party services such
-    | as Stripe, Mailgun, SparkPost and others. This file provides a sane
-    | default location for this type of information, allowing packages
-    | to have a conventional place to find your various credentials.
+    | as Mailgun, SparkPost and others. This file provides a sane default
+    | location for this type of information, allowing packages to have
+    | a conventional file to locate the various service credentials.
     |
     */
 
@@ -34,14 +34,4 @@
         'secret' => env('SPARKPOST_SECRET'),
     ],
 
-    'stripe' => [
-        'model'   => App\User::class,
-        'key'     => env('STRIPE_KEY'),
-        'secret'  => env('STRIPE_SECRET'),
-        'webhook' => [
-            'secret'    => env('STRIPE_WEBHOOK_SECRET'),
-            'tolerance' => env('STRIPE_WEBHOOK_TOLERANCE', 300),
-        ],
-    ],
-
 ];