Remove extra print statements, minor contributing updates.

awx/api/serializers.py

@@ -298,7 +298,6 @@ class BaseSerializer(serializers.ModelSerializer):
             summary_fields['modified_by'] = SortedDict()
             for field in SUMMARIZABLE_FK_FIELDS['user']:
                 summary_fields['modified_by'][field] = getattr(obj.modified_by, field)
-        print summary_fields
         return summary_fields
 
     def get_created(self, obj):

awx/main/tasks.py

@@ -1166,7 +1166,6 @@ class RunSystemJob(BaseTask):
                     args.extend(['--inventory-updates'])
         except Exception, e:
             pass
-        print args
         return args
 
     def build_cwd(self, instance, **kwargs):