title: azure iot-hub device twin remove desired properties
body: <p>Following is my device twin payload, By mistake I have added "someKey" property to it.</p>
  
  <pre><code>{
     desired: {
        "state": {
             "processor": "running",
             "light": "on"
         },
         "someKey": "someValue"
     }
  }
  </code></pre>
  
  <p>I want to remove permanently "someKey" property form JSON twin.</p>