curl --request DELETE \
  --url http://localhost/api/projects/{id}/assistants/{assistantId}

{
  "cause": "<unknown>",
  "stackTrace": [
    {
      "classLoaderName": "<string>",
      "moduleName": "<string>",
      "moduleVersion": "<string>",
      "methodName": "<string>",
      "fileName": "<string>",
      "lineNumber": 123,
      "className": "<string>",
      "nativeMethod": true
    }
  ],
  "message": "<string>",
  "instance": "<string>",
  "type": "<string>",
  "parameters": {},
  "title": "<string>",
  "detail": "<string>",
  "status": {
    "reasonPhrase": "<string>",
    "statusCode": 123
  },
  "suppressed": [
    {
      "stackTrace": [
        {
          "classLoaderName": "<string>",
          "moduleName": "<string>",
          "moduleVersion": "<string>",
          "methodName": "<string>",
          "fileName": "<string>",
          "lineNumber": 123,
          "className": "<string>",
          "nativeMethod": true
        }
      ],
      "message": "<string>",
      "localizedMessage": "<string>"
    }
  ],
  "localizedMessage": "<string>"
}