clean up build

[josephswanson-wf]

• use dart image
• remove unneeded args and echo
• delete smithy.yaml (it's time)

@Workiva/app-frameworks @bradbenjamin-wf @jeffhall-wk

[aviary-wf]

Security Insights

No security relevant content was detected by automated scans.

Action Items

• Review PR for security impact; comment "security review required" if needed or unsure
• Verify aviary.yaml coverage of security relevant code

---

Questions or Comments? Reach out on HipChat: InfoSec Forum.

[codecov-io]

Codecov Report

Merging #273 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #273   +/-   ##
=======================================
  Coverage   21.76%   21.76%           
=======================================
  Files           8        8           
  Lines         170      170           
=======================================
  Hits           37       37           
  Misses        133      133

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 33cbd24...32866ce. Read the comment docs.

[evanweible-wf]

QA +1

• CI passes

@Workiva/release-management-p