chore(python): remove configure_previous_major_version_branches#1001

gcf-owl-bot[bot] wants to merge 1 commit intomaingoogleapis/cloud-profiler-nodejs:mainfrom

owl-bot-update-lock-bb3dc6c75c5f3e1a8928474f2dc8d9bbfa7b809045515764b9ff48c070cf2321googleapis/cloud-profiler-nodejs:owl-bot-update-lock-bb3dc6c75c5f3e1a8928474f2dc8d9bbfa7b809045515764b9ff48c070cf2321Copy head branch name to clipboard