fix(appset): remove cache references

[rumstead]

Remove references to the appset cache since it is no longer being used per #19618

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• The title of the PR conforms to the Toolchain Guide
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).
• My new feature complies with the feature status guidelines.
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• Optional. For bug fixes, I've indicated what older releases this fix should be cherry-picked into (this may or may not happen depending on risk/complexity).

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[bunnyshell]

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[crenshaw-dev]

Thanks for catching this!

[crenshaw-dev]

/cherry-pick release-2.12

[gcp-cherry-pick-bot]

Cherry-pick failed with Merge error 42c2349d7c79131a0212c5a583d1b736eb92d17d into temp-cherry-pick-b67049-release-2.12

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.80%. Comparing base (457bb1f) to head (9809066).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #19647      +/-   ##
==========================================
- Coverage   55.89%   55.80%   -0.09%     
==========================================
  Files         316      316              
  Lines       43779    43778       -1     
==========================================
- Hits        24469    24430      -39     
- Misses      16757    16794      +37     
- Partials     2553     2554       +1     

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