def remove_builder(cls, builder_name: str):
        """Remove a registered builder `builder_name`.

        No reason to use this except for tests.
        """
        cls.builders.pop(builder_name, None)
        for hook_spec in cls.hooks.values():
            hook_spec.pop(builder_name, None)
Remove a registered builder `builder_name`.

        No reason to use this except for tests.