Scan jobs have been removed, clean up old refs

see https://github.com/ansible/awx/issues/5603

awxkit/awxkit/api/pages/job_templates.py

@@ -131,8 +131,6 @@ class JobTemplate(
             inventory=Inventory,
             project=None,
             **kwargs):
-        if not project and job_type != 'scan':
-            project = Project
         if not inventory and not kwargs.get('ask_inventory_on_launch', False):
             inventory = Inventory