code: func (client *GCSBlobstore) Delete(dest string) error {
  	if client.readOnly() {
  		return ErrInvalidROWriteOperation
  	}
  
  	err := client.getObjectHandle(client.authenticatedGCS, dest).Delete(context.Background())
  	if err == storage.ErrObjectNotExist {
  		return nil
  	}
  	return err
  }
docs: // Delete removes a blob from from the GCS blobstore.
  //
  // If the object does not exist, Delete returns a nil error.