Remove a connection
                Remove a connection by using the DeleteConnection Method.
Example
The goal is to remove a connection.
The identifier of the connection is provided.
The client sends:
{
  "jsonrpc": "2.0",
  "id": 6,
  "method": "DeleteConnection",
  "handle": 1,
  "params": [
    "2DC39B8C-07984E17-26697120-5A100832-05B3340D"
  ]
}
                The engine returns:
{
  "jsonrpc": "2.0",
  "id": 6,
  "result": {}
}
                The connection is removed.