chore: drop mention of Python 2.7 from templates (#252)

Source-Link: https://github.com/googleapis/synthtool/commit/facee4cc1ea096cd8bcc008bb85929daa7c414c0
Post-Processor: gcr.io/repo-automation-bots/owlbot-python:latest@sha256:9743664022bd63a8084be67f144898314c7ca12f0a03e422ac17c733c129d803

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
2 files changed