class_docstr: Deletes a HyperparameterTuningJob.
  
  :param project_id: Required. The ID of the Google Cloud project that the service belongs to.
  :param region: Required. The ID of the Google Cloud region that the service belongs to.
  :param hyperparameter_tuning_job_id: Required. The name of the HyperparameterTuningJob resource to be
      deleted.
  :param retry: Designation of what errors, if any, should be retried.
  :param timeout: The timeout for this request.
  :param metadata: Strings which should be sent along with the request as metadata.
code: def execute(self, context: Context):
      hook = HyperparameterTuningJobHook(
          gcp_conn_id=self.gcp_conn_id,
          impersonation_chain=self.impersonation_chain,
      )
      try:
          self.log.info(
              "Deleting Hyperparameter Tuning job: %s",
              self.hyperparameter_tuning_job_id,
          )
          operation = hook.delete_hyperparameter_tuning_job(
              region=self.region,
              project_id=self.project_id,
              hyperparameter_tuning_job=self.hyperparameter_tuning_job_id,
              retry=self.retry,
              timeout=self.timeout,
              metadata=self.metadata,
          )
          hook.wait_for_operation(
              timeout=self.timeout, operation=operation
          )
          self.log.info("Hyperparameter Tuning job was deleted.")
      except NotFound:
          self.log.info(
              "The Hyperparameter Tuning Job ID %s does not exist.",
              self.hyperparameter_tuning_job_id,
          )
  
imports: from __future__ import annotations
  from typing import TYPE_CHECKING, Sequence
  from google.api_core.exceptions import NotFound
  from google.api_core.gapic_v1.method import DEFAULT, _MethodDefault
  from google.cloud.aiplatform_v1.types import HyperparameterTuningJob
  from airflow.providers.google.cloud.hooks.vertex_ai.hyperparameter_tuning_job import HyperparameterTuningJobHook
  from airflow.providers.google.cloud.links.vertex_ai import VertexAIHyperparameterTuningJobListLink, VertexAITrainingLink
  from airflow.providers.google.cloud.operators.cloud_base import GoogleCloudBaseOperator
label_desc: Use image node_id 2 for calling the DeleteHyperparameterTuningJobOperator obj's underlying member method code with example usage: obj.execute(context) without return types