style: delete duplicate error check in artifacttrash dao

[chlins]

Delete duplicate error check section in the artifacttrash dao Flush method.

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Comprehensive Summary of your change

Issue being fixed

Fixes #(issue)

Please indicate you've done the following:

• Well Written Title and Summary of the PR
• Label the PR as needed. "release-note/ignore-for-release, release-note/new-feature, release-note/update, release-note/enhancement, release-note/community, release-note/breaking-change, release-note/docs, release-note/infra, release-note/deprecation"
• Accepted the DCO. Commits without the DCO will delay acceptance.
• Made sure tests are passing and test coverage is added if needed.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed in website repository.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.31%. Comparing base (b7b8847) to head (32fa6fa).
Report is 218 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main   #20557       +/-   ##
===========================================
- Coverage   67.56%   46.31%   -21.25%     
===========================================
  Files         991      247      -744     
  Lines      109181    13777    -95404     
  Branches     2719     2845      +126     
===========================================
- Hits        73768     6381    -67387     
+ Misses      31449     7067    -24382     
+ Partials     3964      329     -3635     

Flag	Coverage Δ
unittests	46.31% <ø> (-21.25%)	⬇️

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see 1238 files with indirect coverage changes

[wy65701436]

lgtm