Drop sync job in favor of local cronjob

[troglobit]

Description

Set up as user cron job on spa (because of a personal access token):

5 * * * 1-5 $HOME/.local/bin/repo-sync.sh >> $HOME/.local/log/repo-sync.log 2>&1

Checklist

Tick relevant boxes, this PR is-a or has-a:

• [ ] Bugfix
  • [ ] Regression tests
  • [ ] ChangeLog updates (for next release)
• [ ] Feature
  • [ ] YANG model change => revision updated?
  • [ ] Regression tests added?
  • [ ] ChangeLog updates (for next release)
  • [ ] Documentation added?
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (please detail in commit messages)
• [ ] Build related changes
• [ ] Documentation content changes
• [X] Other (please describe): repo sync