Update depencies

Signed-off-by: Clemens John <clemens.john@openitb.com>

composer.json

@@ -17,7 +17,6 @@
     },
     "require": {
         "illuminate/support": "~5",
-        "barryvdh/laravel-cors": "~0.11",
         "ramsey/uuid": "~3.0",
         "laravel-api-server/core": "dev-master",
         "laravel-api-server/jsonapi": "dev-master"