Remove PostgreSQL PORT setting

The `PORT` setting in the database configuration is redundant because
Django defaults to the PostgreSQL standard port (`5432`) when the `PORT`
setting is omitted.

Reference: https://docs.djangoproject.com/en/5.1/ref/settings/#std-setting-PORT

roles/pulp/templates/settings.py.j2

@@ -11,7 +11,6 @@ DATABASES = {
 		'USER': 'pulp',
 		'PASSWORD': '{{ pulp_db_password }}',
 		'HOST': 'localhost',
-		'PORT': '',
 	}
 }