How do I remove all identifiers from a Disqus thread?

Each Disqus thread can have one or more identifiers (usually one initially supplied by this.page.identifier in the JavaScript embed code of webpage). The list of identifiers for a thread can be obtained from the threads/details API endpoint (documentation). Example response:

{
  "code":0,
  "response":{
    ...
    "identifiers":[
      "my-identifier",
      "my-other-merged-identifier"
    ],
    ...
  }
}

Is there a way to delete/remove all identifiers from a thread? I would like the thread/details API endpoint to end up with this response:

{
  "code":0,
  "response":{
    ...
    "identifiers":[],
    ...
  }
}

I am also open to a solution that does this through the web interface (if possible at all).