[Bug] Depercated warning regarding __self__ in defaults list

[francois-rozet]

The following code should be removed.

hydra/hydra/_internal/defaults_list.py

Lines 241 to 252 in 30d8a25

	if not has_self and has_non_override or len(defaults) == 0:
	# This check is here to make the migration from Hydra 1.0 to Hydra 1.1 smoother and should be removed in 1.2
	# The warning should be removed in 1.2
	if containing_node.primary and has_config_content and has_non_override:
	msg = (
	f"In '{containing_node.get_config_path()}': Defaults list is missing `_self_`. "
	f"See https://hydra.cc/docs/1.2/upgrades/1.0_to_1.1/default_composition_order for more information"
	)
	if os.environ.get("SELF_WARNING_AS_ERROR") == "1":
	raise ConfigCompositionException(msg)
	warnings.warn(msg, UserWarning)
	defaults.append(ConfigDefault(path="_self_"))