remove iron config. moved to package

config/queue.php

@@ -12,7 +12,7 @@ return [
     | syntax for each one. Here you may set the default queue driver.
     |
     | Supported: "null", "sync", "database", "beanstalkd",
-    |            "sqs", "iron", "redis"
+    |            "sqs", "redis"
     |
     */
 
@@ -58,15 +58,6 @@ return [
             'region' => 'us-east-1',
         ],
 
-        'iron' => [
-            'driver'  => 'iron',
-            'host'    => 'mq-aws-us-east-1.iron.io',
-            'token'   => 'your-token',
-            'project' => 'your-project-id',
-            'queue'   => 'your-queue-name',
-            'encrypt' => true,
-        ],
-
         'redis' => [
             'driver'     => 'redis',
             'connection' => 'default',