title: Removing JSON elements with jackson
body: <p>I've a particular JSON Node that corresponds to import org.codehaus.jackson.JsonNode, and not 
  import org.codehaus.jackson.map.JsonNode.</p>
  
  <pre><code>[
      {
          "givenName": "Jim",
          "formattedName": "jimJackson",
          "familyName": null,
          "middleName": "none",
          "honorificPrefix": "mr",
          "honorificSuffix": "none"
      },
      {
          "givenName": "john",
          "formattedName": "johnLasher",
          "familyName": null,
          "middleName": "none",
          "honorificPrefix": "mr",
          "honorificSuffix": "none"
      },
      {
          "givenName": "carlos",
          "formattedName": "carlosAddner",
          "familyName": null,
          "middleName": "none",
          "honorifiPrefix": "mr",
          "honorificSuffix": "none"
      },
      {
          "givenName": "lisa",
          "formattedName": "lisaRay",
          "familyName": null,
          "middleName": "none",
          "honorificPrefix": "mrs",
          "honorificSuffix": "none"
      },
      {
          "givenName": "bradshaw",
          "formattedName": "bradshawLion",
          "familyName": null,
          "middleName": "none",
          "honorificPrefix": "mr",
          "honorificSuffix": "none"
      },
      {
          "givenName": "phill",
          "formattedName": "phillKane",
          "familyName": null,
          "middleName": "none",
          "honorificPrefix": "mr",
          "honorificSuffix": "none"
      },
      {
          "givenName": "Gabriel",
          "formattedName": "gabrielMoosa",
          "familyName": null,
          "middleName": "none",
          "honorificPrefix": "mr",
          "honorificSuffix": "none"
      }
  ]
  </code></pre>
  
  <p>I want to remove the "familyName" and "middleName" from all the JSON nodes of the above array. Is there any way to achieve this? </p>