N1QL to remove array elements

SQL++
3

Thanks Frank.
If my document is nested and the array is present at a different level, how do we mention the path in the update query. I am using the N1QL mentioned here Removing elements in a JsonArray

My document is similar to shown below :

{  
  "root_path":{  
    "level_1":{  
      "level_2":{  
        "contents":[  
          {  
            "field1":"value1",
            "field2":"value2",
            "field3":"value3"
          },
          {  
            "field1":"value1",
            "field2":"value2",
            "field3":"value3"
          }
        ]
      }
    }
  }
}

Please help me out with N1QL to query the contents array on level_2.