Don't need __model__ declaration in builder classes.

Author: acerathereinspirative-nhs-nvir

tests/utils/builders.py

@@ -7,22 +7,18 @@
 from eligibility_signposting_api.model.rules import CampaignConfig, Iteration, IterationCohort, IterationRule
 
 
-class IterationCohortFactory(ModelFactory[IterationCohort]):
-    __model__ = IterationCohort
+class IterationCohortFactory(ModelFactory[IterationCohort]): ...
 
 
-class IterationRuleFactory(ModelFactory[IterationRule]):
-    __model__ = IterationRule
+class IterationRuleFactory(ModelFactory[IterationRule]): ...
 
 
 class IterationFactory(ModelFactory[Iteration]):
-    __model__ = Iteration
     iteration_cohorts = Use(IterationCohortFactory.batch, size=2)
     iteration_rules = Use(IterationRuleFactory.batch, size=2)
 
 
 class CampaignConfigFactory(ModelFactory[CampaignConfig]):
-    __model__ = CampaignConfig
     iterations = Use(IterationFactory.batch, size=2)