Untag staging models

[sydneynotthecity]

PR Checklist

PR Structure

• This PR has reasonably narrow scope (if not, break it down into smaller PRs).
• This PR avoids mixing refactoring changes with feature changes (split into two PRs
  otherwise).
• This PR's title starts with the jira ticket associated with the PR.

Thoroughness

• This PR adds tests for the most critical parts of the new functionality or fixes.
• I've updated the docs and README with the added features, breaking changes, new instructions on how to use the repository.

Release planning

• I've decided if this PR requires a new major/minor/patch version accordingly to
  semver, and I've changed the name of the BRANCH to major/* , minor/* or patch/* .

What

Untagging staging and intermediate models

Why

We want to move away from manually tagging every model. Models should run based on node selection and leverage built in dbt functionality to create the DAG.

Known limitations

[TODO or N/A]

[amishas157]

Looks good to me.