destroyedInstance
Implements the destroyedInstance callback so it dispatches an event and updates the instance.
    connection.destroyedInstance(instance, props)
  
  Updates the instance with props and dispatches a "destroyed" event on the instance and the instances's
constructor function (Map).
Parameters
- instance 
{Map}:a Map instance
 - props 
{Object}:the data in the response from destroyData