Removed dialogflow fulfillment set_computed_name post_create

This is now duplicate code.

Author: melinath

mmv1/products/dialogflow/Fulfillment.yaml

@@ -37,7 +37,6 @@ timeouts:
   update_minutes: 20
   delete_minutes: 20
 custom_code:
-  post_create: 'templates/terraform/post_create/set_computed_name.tmpl'
   custom_import: 'templates/terraform/custom_import/self_link_as_name_set_project.go.tmpl'
 # Skip sweeper gen since this is a child resource.
 exclude_sweeper: true