Revert "*: providers and sources -> channels, PolicyModel to PolicyBindingModel that uses custom M2M through"

This reverts commit 7ed3ceb960.

passbook/policies/dummy/models.py

@@ -6,7 +6,7 @@ from django.db import models
 from django.utils.translation import gettext_lazy as _
 from structlog import get_logger
 
-from passbook.policies.models import Policy
+from passbook.core.models import Policy
 from passbook.policies.types import PolicyRequest, PolicyResult
 
 LOGGER = get_logger()