🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Author: gcf-owl-bot[bot]

.gitignore

@@ -62,6 +62,3 @@ system_tests/local_test_setup
 # Make sure a generated file isn't accidentally committed.
 pylintrc
 pylintrc.test
-
-# Docker files
-get-docker.sh