fix: shared cluster test to work in OSS again

[amandavialva01]

Ticket

Description

This PR removes the changes made to the GKE shared cluster testing that allowed it to run successfully in the EE repo.

Test Plan

CI Passes.

Checklist

• Changes have been manually QA'd
• User-facing API changes need the "User-facing API Change" label.
• Release notes should be added as a separate file under docs/release-notes/.
  See Release Note for details.
• Licenses should be included for new code which was copied and/or modified from any external code.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 40.43%. Comparing base (dd7f4b5) to head (4834c24).
Report is 12 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9195      +/-   ##
==========================================
- Coverage   45.92%   40.43%   -5.49%     
==========================================
  Files         777      749      -28     
  Lines      107000   105219    -1781     
  Branches     2437     2438       +1     
==========================================
- Hits        49137    42546    -6591     
- Misses      57631    62441    +4810     
  Partials      232      232              

Flag	Coverage Δ
backend	34.27% <ø> (ø)
harness	49.53% <ø> (-14.49%)	⬇️
web	35.41% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 162 files with indirect coverage changes

[netlify]

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[eecsliu]

Test passes and lgtm! Nice work!

[eecsliu]

My review still stands :) as long as the test passes feel free to merge!