code: public AzkabanClientStatus deleteProject(String projectName) throws AzkabanClientException {
  
      AzkabanMultiCallables.DeleteProjectCallable callable =
          AzkabanMultiCallables.DeleteProjectCallable.builder()
              .client(this)
              .projectName(projectName)
              .build();
  
      return runWithRetry(callable, AzkabanClientStatus.class);
    }
docs: Deletes a project. Currently no response message will be returned after finishing
  the delete operation. Thus success status is always expected.
  
  @param projectName project name
  
  @return A status object indicating if AJAX request is successful.