Housekeeping: Use RestrictedQuerySet for default manager on base models

netbox/circuits/models/providers.py

@@ -59,8 +59,6 @@ class Provider(PrimaryModel):
         to='tenancy.ContactAssignment'
     )
 
-    objects = RestrictedQuerySet.as_manager()
-
     clone_fields = [
         'asn', 'account', 'portal_url', 'noc_contact', 'admin_contact',
     ]
@@ -97,8 +95,6 @@ class ProviderNetwork(PrimaryModel):
         blank=True
     )
 
-    objects = RestrictedQuerySet.as_manager()
-
     class Meta:
         ordering = ('provider', 'name')
         constraints = (