The two # type: ignore[override] inline suppression comments on the
link_child and unlink_child methods of ResourceDagMixin violated the
project's strict no-suppression policy in CONTRIBUTING.md.
Investigation revealed the suppressions were unnecessary: after removing
them, nox -e typecheck passes with 0 errors and 0 warnings. The
underlying Pyright type checker already accepts the mixin pattern with
self: RegistryHost annotations without any suppression.
Both comments are removed with no other changes required.
ISSUES CLOSED: #2830
freemo