OM46, del 1: Support batch_complete endpoint from setra

tests/test_models.py

@@ -8,10 +8,6 @@ def test_batch(batch_fixture):
     assert Batch(**batch_fixture)
 
 
-def test_batch_complete(batch_complete_fixture):
-    assert Batch(**batch_complete_fixture)
-
-
 def test_voucher(voucher_fixture):
     assert Voucher(**voucher_fixture)