Remove references to `last_valid_round_num` in `tff.CSVMetricsManager.update_metrics`.
@@ -268,9 +268,8 @@ class CSVMetricsManager(metrics_manager.MetricsManager):
Raises:
RuntimeError: If metrics do not exist (none loaded during construction '
- nor recorded via `update_metrics()` and `last_valid_round_num` is not
- zero.
- ValueError: If `last_valid_round_num` is negative.
+ nor recorded via `update_metrics()` and `round_num` is not zero.
+ ValueError: If `round_num` is negative.
"""
if round_num < 0:
raise ValueError('Attempting to clear metrics after round '
