@check_instance_cell
    def delete_instance_metadata(self, context, instance, key):
        super(ComputeCellsAPI, self).delete_instance_metadata(context,
                instance, key)
        self._cast_to_cells(context, instance, 'delete_instance_metadata',
                key)
Delete the given metadata item from an instance.
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/compute/cells_api.py/ComputeCellsAPI.delete_instance_metadata