Remove the frame fuzz test in CI

[evshary]

Description

Now we have removed the frame test from fuzz tests, and we forgot to remove it in CI.

What does this PR do?

Remove frame test in CI

Why is this change needed?

Scheduled test failed
https://github.com/eclipse-zenoh/zenoh/actions/runs/27246532246

Related Issues

None

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Labels: internal

🏠 Internal Change

This PR is marked as internal (not user-facing):

• No API changes - Public APIs unchanged
• No behavior changes - External behavior identical
• Refactoring/maintenance - Code improvements only
• Tests still pass - All existing tests pass without modification

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.02%. Comparing base (e6a1d4e) to head (3f43d99).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2638      +/-   ##
==========================================
- Coverage   74.11%   74.02%   -0.09%     
==========================================
  Files         400      400              
  Lines       61044    61038       -6     
==========================================
- Hits        45240    45181      -59     
- Misses      15804    15857      +53     

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[diogomatsubara]

LGTM, the 1.75 failures in CI are related to #2639 and the unstable tests failures might be a flaky one so it was re-run.