Removes build_at - Githubissues

Resolves #67

Checklist

[x] I have viewed, signed, and submitted the Contributor License Agreement.
[x] I have linked issue(s) that this PR should close using keywords or the Github UI (See docs)
[ ] I have added an integration test, if necessary.
[x] I have reviewed the styleguide for guidance on my code quality.
[x] I'm happy with the commit history on this PR (I have rebased/squashed as needed).