Remove zips used by bwc tests

[joshuali925]

Description

closes #581

Issues Resolved

[List any issues this PR will resolve]

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

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[codecov-commenter]

Codecov Report

Merging #648 (0efec3c) into main (ecfd2f9) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main     #648   +/-   ##
=========================================
  Coverage     55.16%   55.16%           
  Complexity      283      283           
=========================================
  Files           240      240           
  Lines          7697     7697           
  Branches       1572     1572           
=========================================
  Hits           4246     4246           
  Misses         3281     3281           
  Partials        170      170           

Flag	Coverage Δ
dashboards-observability	46.83% <ø> (ø)
opensearch-observability	76.60% <ø> (ø)

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