samples: pull in latest typeless bot, clean up some comments (#224)

samples: pull in latest typeless bot, clean up some comments

Source-Link: googleapis/synthtool@0a68e56
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:5b05f26103855c3a15433141389c478d1d3fe088fb5d4e3217c4793f6b3f245e

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: sofisl <55454395+sofisl@users.noreply.github.com>
Co-authored-by: gcf-merge-on-green[bot] <60162190+gcf-merge-on-green[bot]@users.noreply.github.com>