code: def delete(self, key):
          
          return self._delete(
              url='{url}labels/labels/{key}.json'.format(
                  url=self.URL,
                  key=key),
              headers=self.headers,
          )
docs: When applications are provided, this endpoint will remove those
          applications from the label.
  
          When no applications are provided, this endpoint will remove the label.
  
          :type key: str
          :param key: Label key. Example: 'Language:Java'
  
          :rtype: dict
          :return: The JSON response of the API
  
          ::
  
              {
                  "label": {
                      "key": "string",
                      "category": "string",
                      "name": "string",
                      "links": {
                          "applications": [
                              "integer"
                          ],
                          "servers": [
                              "integer"
                          ]
                      }
                  }
              }