remove comment

Author: suztomo

.github/blunderbuss.yml

@@ -1,8 +1,4 @@
 # Blunderbuss config
-#
-# This file controls who is assigned for pull requests and issues.
-# Note: This file is autogenerated. To make changes to the assignee
-# team, please update `codeowner_team` in `.repo-metadata.json`.
 assign_issues:
   - googleapis/cloud-sdk-python-team
   - googleapis/bigquery-dataframe-team