Remove old documentation for insteon_hub

Component won't be fixed, replaced by insteon_local

source/_components/insteon_hub.markdown

@@ -1,37 +0,0 @@
----
-layout: page
-title: "Insteon Hub"
-description: "Instructions on how to setup the Insteon Hub within Home Assistant."
-date: 2016-01-27 08:00
-sidebar: true
-comments: false
-sharing: true
-footer: true
-logo: insteon.png
-ha_category: Hub
-ha_iot_class: "Cloud Polling"
----
-
-<p class='note warning'>
-This component has been disabled due to a complaint by Insteon. It will be enabled again once <a href='https://github.com/home-assistant/home-assistant/issues/3811'>this issue</a> has been resolved.
-</p>
-
-The `insteon` component lets you use your [Insteon Hub](http://www.insteon.com/insteon-hub/) with Home Assistant.
-
-You will need to obtain an Insteon REST API key from the [Insteon Developer program](http://www.insteon.com/become-an-insteon-developer) to use this component.
-
-To integrate your Insteon Hub with Home Assistant, add the following section to your `configuration.yaml` file:
-
-```yaml
-# Example configuration.yaml entry
-insteon_hub:
-  username: YOUR_USERNAME
-  password: YOUR_PASSWORD
-  api_key: YOUR_API_KEY
-```
-
-Configuration variables:
-
-- **username** (*Required*): The username used to access the Insteon interface (e.g., the [connect.insteon.com](http://connect.insteon.com/) site).
-- **password** (*Required*): The password used to access the Insteon interface.
-- **api_key** (*Required*): The Insteon REST API key emailed to you once you are approved in the Insteon Developer program.