remove printf from tests

Author: bcumming

unittests/test_schema.py

@@ -5,7 +5,6 @@
 
 import jsonschema
 import pytest
-import pprint
 import yaml
 
 import stackinator.schema as schema
@@ -149,10 +148,6 @@ def test_environments_yaml(yaml_path):
         raw = yaml.load(fid, Loader=yaml.Loader)
         schema.EnvironmentsValidator.validate(raw)
 
-        print("===========================================================================")
-        pprint.pp(raw)
-        print("===========================================================================")
-
         # the defaults-env does not set fields
         # test that they have been set to the defaults correctly