fix(ActiveMQPolicy): remove erroneous message about default idle

A bug in our code indicated to me that ActiveMQ was not respecting
idle timeouts that we sent. This is not the case, but I am still
leaving the ActiveMQ policy in place in the event we find a need
for it in the future.

lib/policies/activemq_policy.js

@@ -4,16 +4,6 @@ var u = require('../utilities'),
     DefaultPolicy = require('./default_policy');
 
 module.exports = u.deepMerge({
-  defaultSubjects: false,
-
-  connect: {
-    options: {
-      // By default ActiveMQ uses 30s for its idle timeout. The broker does not
-      // seem to honor a change to this value from the client side, and also does
-      // not send back that value as part of the handshake (it just returns
-      // whatever value we sent, without honoring that value)
-      idleTimeout: 30000,
-    }
-  }
-
+  defaultSubjects: false
 }, DefaultPolicy);
+